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IPV4

216.136.127.255

Record found
Retrieved · 30 Sep 2026, 07:50 UTC1 sourceView JSON
Click a domain or IP to look it up.
01

Registry record

RDAPhttps://rdap.arin.net/registry/ip/216.136.127.255
Record found
Record ID
NET-216-136-96-0-1
Network name
TWTC-BLOCK-03
Address range
216.136.96.0 — 216.136.127.255
CIDR blocks
216.136.96.0/19
Network type
ALLOCATION
Parent network
NET-216-136-0-0-1
Last changed
2001-09-26T17:15:54-04:00
Registered
1999-08-25T00:00:00-04:00
Status
active
Notices & terms 3

Terms of Service

By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use https://www.arin.net/resources/registry/whois/tou/

Whois Inaccuracy Reporting

If you see inaccuracies in the results, please visit: https://www.arin.net/resources/registry/whois/inaccuracy_reporting/

Copyright Notice

Copyright 1997-2026, American Registry for Internet Numbers, Ltd.

Organizations & contacts

6
Organization / registrant
tw telecom holdings, inc.
TWTC
Address
10475 Park Meadows Drive Littleton CO 80124 United States
Type
org
Registration Comments
ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE ANY ISP ANNOUNCING OR TRANSITING PORTIONS WITHIN OUR RANGES SHOULD NOT RELY ON PRESENTED LOA'S UNLESS THOSE RANGES ARE ALSO ANNOUNCED TO A LUMEN ASN. Our looking glass is located at: https://lookingglass.centurylink.com/ For subpoena or court order please fax 844.254.5800 or refer to our Trust & Safety page: https://www.lumen.com/en-us/about/legal/trust-center/trust-and-safety.html For abuse issues, please email abuse@aup.lumen.com All abuse reports MUST include: * src IP * dest IP (your IP) * dest port * Accurate date/timestamp and timezone of activity * Intensity/frequency (short log extracts) * Your contact details (phone and email) Without these we will be unable to identify the correct owner of the IP address at that point in time.

Registry · rdap.arin.net

Administrative
IP Manager
ZT87-ARIN
Address
700 W Mineral Ave Littleton CO 80120 United States
Organization
Centurylink
Type
group
Email
ipadmin@centurylink.com
Email
ipinv@centurylink.com
Phone (work, voice)
+1-800-829-0420
Registration Comments
ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE ANY ISP ANNOUNCING OR TRANSITING PORTIONS WITHIN OUR RANGES SHOULD NOT RELY ON PRESENTED LOA'S UNLESS THOSE RANGES ARE ALSO ANNOUNCED TO A LUMEN ASN. Our looking glass is located at: https://lookingglass.centurylink.com/ For subpoena or court order please fax 844.254.5800 or refer to our Trust & Safety page: https://www.lumen.com/en-us/about/legal/trust-center/trust-and-safety.html For abuse issues, please email abuse@aup.lumen.com All abuse reports MUST include: * src IP * dest IP (your IP) * dest port * Accurate date/timestamp and timezone of activity * Intensity/frequency (short log extracts) * Your contact details (phone and email) Without these we will be unable to identify the correct owner of the IP address at that point in time.

Registry · rdap.arin.net

Technical
NOC SWIP Team
NST12-ARIN
Address
10475 Park Meadows Drive Littleton CO 80124 United States
Organization
Level 3 Communications
Type
group
Email
ipaddressing@level3.com
Phone (work, voice)
+1-800-829-0420

Registry · rdap.arin.net

Technical
tw telecom Hostmaster
HOS8-ORG-ARIN
Address
10475 Park Meadows Dr Littleton CO 80124 United States
Organization
Level 3 Communications
Type
group
Email
noc.coreip@level3.com
Phone (work, voice)
+1-800-829-0420
Unvalidated POC
ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-08-12

Registry · rdap.arin.net

Abuse
tw telecom Abuse Desk
TWTAD-ARIN
Address
1025 Eldorado Blvd. Broomfield CO 80021 United States
Organization
Level 3 Communications - Abuse
Type
group
Email
security@level3.com
Email
abuse@level3.com
Phone (work, voice)
+1-800-829-0420
Unvalidated POC
ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-07-04

Registry · rdap.arin.net

Noc
TWTC Data NOC
TDN1-ARIN
Address
10475 Park Meadows Drive Littleton CO 80124 United States
Organization
Level 3 Communications
Type
group
Email
noc.coreip@level3.com
Phone (work, voice)
+1-800-829-0420
Unvalidated POC
ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-07-04

Registry · rdap.arin.net

Route / route6 records IRR

rr.arin.net:43

BGP observations →

Exact and covering objects from ARIN. These are registered routing policies; they do not confirm a live announcement.

No matching route objects were returned by this registry. Records may exist in another IRR.

Registry · RDAP Original response
https://rdap.arin.net/registry/ip/216.136.127.255
{
    "arin_originas0_originautnums": [],
    "cidr0_cidrs": [
        {
            "v4prefix": "216.136.96.0",
            "length": 19
        }
    ],
    "endAddress": "216.136.127.255",
    "entities": [
        {
            "entities": [
                {
                    "events": [
                        {
                            "eventAction": "last changed",
                            "eventDate": "2019-07-05T18:08:42-04:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2003-05-23T09:52:53-04:00"
                        }
                    ],
                    "handle": "TDN1-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/TDN1-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/TDN1-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "remarks": [
                        {
                            "description": [
                                "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-07-04"
                            ],
                            "title": "Unvalidated POC"
                        }
                    ],
                    "roles": [
                        "noc"
                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
                                "version",
                                [],
                                "text",
                                "4.0"
                            ],
                            [
                                "adr",
                                {
                                    "label": "10475 Park Meadows Drive\nLittleton\nCO\n80124\nUnited States"
                                },
                                "text",
                                [
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    ""
                                ]
                            ],
                            [
                                "fn",
                                [],
                                "text",
                                "TWTC Data NOC"
                            ],
                            [
                                "org",
                                [],
                                "text",
                                "Level 3 Communications"
                            ],
                            [
                                "kind",
                                [],
                                "text",
                                "group"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "noc.coreip@level3.com"
                            ],
                            [
                                "tel",
                                {
                                    "type": [
                                        "work",
                                        "voice"
                                    ]
                                },
                                "text",
                                "+1-800-829-0420"
                            ]
                        ]
                    ]
                },
                {
                    "events": [
                        {
                            "eventAction": "last changed",
                            "eventDate": "2025-12-08T09:45:35-05:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2001-08-03T10:07:23-04:00"
                        }
                    ],
                    "handle": "ZT87-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/ZT87-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/ZT87-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "remarks": [
                        {
                            "description": [
                                "ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE ANY ISP ANNOUNCING OR TRANSITING PORTIONS WITHIN OUR RANGES SHOULD NOT RELY ON PRESENTED LOA'S UNLESS THOSE RANGES ARE ALSO ANNOUNCED TO A LUMEN ASN. ",
                                "",
                                "Our looking glass is located at: https://lookingglass.centurylink.com/",
                                "",
                                "For subpoena or court order please fax 844.254.5800 or refer to our Trust & Safety page:",
                                "https://www.lumen.com/en-us/about/legal/trust-center/trust-and-safety.html",
                                "",
                                "For abuse issues, please email abuse@aup.lumen.com",
                                "All abuse reports MUST include: ",
                                "* src IP ",
                                "* dest IP (your IP) ",
                                "* dest port ",
                                "* Accurate date/timestamp and timezone of activity ",
                                "* Intensity/frequency (short log extracts) ",
                                "* Your contact details (phone and email) ",
                                "Without these we will be unable to identify the correct owner of the IP address at that point in time. "
                            ],
                            "title": "Registration Comments"
                        }
                    ],
                    "roles": [
                        "administrative"
                    ],
                    "status": [
                        "validated"
                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
                                "version",
                                [],
                                "text",
                                "4.0"
                            ],
                            [
                                "adr",
                                {
                                    "label": "700 W Mineral Ave\nLittleton\nCO\n80120\nUnited States"
                                },
                                "text",
                                [
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    ""
                                ]
                            ],
                            [
                                "fn",
                                [],
                                "text",
                                "IP Manager"
                            ],
                            [
                                "org",
                                [],
                                "text",
                                "Centurylink"
                            ],
                            [
                                "kind",
                                [],
                                "text",
                                "group"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "ipadmin@centurylink.com"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "ipinv@centurylink.com"
                            ],
                            [
                                "tel",
                                {
                                    "type": [
                                        "work",
                                        "voice"
                                    ]
                                },
                                "text",
                                "+1-800-829-0420"
                            ]
                        ]
                    ]
                },
                {
                    "events": [
                        {
                            "eventAction": "last changed",
                            "eventDate": "2019-07-05T18:09:16-04:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2002-10-07T16:11:13-04:00"
                        }
                    ],
                    "handle": "TWTAD-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/TWTAD-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/TWTAD-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "remarks": [
                        {
                            "description": [
                                "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-07-04"
                            ],
                            "title": "Unvalidated POC"
                        }
                    ],
                    "roles": [
                        "abuse"
                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
                                "version",
                                [],
                                "text",
                                "4.0"
                            ],
                            [
                                "adr",
                                {
                                    "label": "1025 Eldorado Blvd.\nBroomfield\nCO\n80021\nUnited States"
                                },
                                "text",
                                [
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    ""
                                ]
                            ],
                            [
                                "fn",
                                [],
                                "text",
                                "tw telecom Abuse Desk"
                            ],
                            [
                                "org",
                                [],
                                "text",
                                "Level 3 Communications - Abuse"
                            ],
                            [
                                "kind",
                                [],
                                "text",
                                "group"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "security@level3.com"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "abuse@level3.com"
                            ],
                            [
                                "tel",
                                {
                                    "type": [
                                        "work",
                                        "voice"
                                    ]
                                },
                                "text",
                                "+1-800-829-0420"
                            ]
                        ]
                    ]
                },
                {
                    "events": [
                        {
                            "eventAction": "last changed",
                            "eventDate": "2026-05-15T16:25:48-04:00"
                        },
                        {
                            "eventAction": "registration",
                            "eventDate": "2003-05-21T15:55:04-04:00"
                        }
                    ],
                    "handle": "NST12-ARIN",
                    "links": [
                        {
                            "href": "https://rdap.arin.net/registry/entity/NST12-ARIN",
                            "rel": "self",
                            "type": "application/rdap+json",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        },
                        {
                            "href": "https://whois.arin.net/rest/poc/NST12-ARIN",
                            "rel": "alternate",
                            "type": "application/xml",
                            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                        }
                    ],
                    "objectClassName": "entity",
                    "port43": "whois.arin.net",
                    "roles": [
                        "technical"
                    ],
                    "status": [
                        "validated"
                    ],
                    "vcardArray": [
                        "vcard",
                        [
                            [
                                "version",
                                [],
                                "text",
                                "4.0"
                            ],
                            [
                                "adr",
                                {
                                    "label": "10475 Park Meadows Drive\nLittleton\nCO\n80124\nUnited States"
                                },
                                "text",
                                [
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    "",
                                    ""
                                ]
                            ],
                            [
                                "fn",
                                [],
                                "text",
                                "NOC SWIP Team"
                            ],
                            [
                                "org",
                                [],
                                "text",
                                "Level 3 Communications"
                            ],
                            [
                                "kind",
                                [],
                                "text",
                                "group"
                            ],
                            [
                                "email",
                                [],
                                "text",
                                "ipaddressing@level3.com"
                            ],
                            [
                                "tel",
                                {
                                    "type": [
                                        "work",
                                        "voice"
                                    ]
                                },
                                "text",
                                "+1-800-829-0420"
                            ]
                        ]
                    ]
                }
            ],
            "events": [
                {
                    "eventAction": "last changed",
                    "eventDate": "2022-03-24T07:54:21-04:00"
                },
                {
                    "eventAction": "registration",
                    "eventDate": "1999-03-17T00:00:00-05:00"
                }
            ],
            "handle": "TWTC",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/TWTC",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                },
                {
                    "href": "https://whois.arin.net/rest/org/TWTC",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE ANY ISP ANNOUNCING OR TRANSITING PORTIONS WITHIN OUR RANGES SHOULD NOT RELY ON PRESENTED LOA'S UNLESS THOSE RANGES ARE ALSO ANNOUNCED TO A LUMEN ASN. ",
                        "",
                        "Our looking glass is located at: https://lookingglass.centurylink.com/",
                        "",
                        "For subpoena or court order please fax 844.254.5800 or refer to our Trust & Safety page:",
                        "https://www.lumen.com/en-us/about/legal/trust-center/trust-and-safety.html",
                        "",
                        "For abuse issues, please email abuse@aup.lumen.com",
                        "All abuse reports MUST include: ",
                        "* src IP ",
                        "* dest IP (your IP) ",
                        "* dest port ",
                        "* Accurate date/timestamp and timezone of activity ",
                        "* Intensity/frequency (short log extracts) ",
                        "* Your contact details (phone and email) ",
                        "Without these we will be unable to identify the correct owner of the IP address at that point in time."
                    ],
                    "title": "Registration Comments"
                }
            ],
            "roles": [
                "registrant"
            ],
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "tw telecom holdings, inc."
                    ],
                    [
                        "adr",
                        {
                            "label": "10475 Park Meadows Drive\nLittleton\nCO\n80124\nUnited States"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "org"
                    ]
                ]
            ]
        },
        {
            "events": [
                {
                    "eventAction": "last changed",
                    "eventDate": "2019-08-13T17:45:35-04:00"
                }
            ],
            "handle": "HOS8-ORG-ARIN",
            "links": [
                {
                    "href": "https://rdap.arin.net/registry/entity/HOS8-ORG-ARIN",
                    "rel": "self",
                    "type": "application/rdap+json",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                },
                {
                    "href": "https://whois.arin.net/rest/poc/HOS8-ORG-ARIN",
                    "rel": "alternate",
                    "type": "application/xml",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                }
            ],
            "objectClassName": "entity",
            "port43": "whois.arin.net",
            "remarks": [
                {
                    "description": [
                        "ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2020-08-12"
                    ],
                    "title": "Unvalidated POC"
                }
            ],
            "roles": [
                "technical"
            ],
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "adr",
                        {
                            "label": "10475 Park Meadows Dr\nLittleton\nCO\n80124\nUnited States"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "tw telecom Hostmaster"
                    ],
                    [
                        "org",
                        [],
                        "text",
                        "Level 3 Communications"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "noc.coreip@level3.com"
                    ],
                    [
                        "tel",
                        {
                            "type": [
                                "work",
                                "voice"
                            ]
                        },
                        "text",
                        "+1-800-829-0420"
                    ]
                ]
            ]
        }
    ],
    "events": [
        {
            "eventAction": "last changed",
            "eventDate": "2001-09-26T17:15:54-04:00"
        },
        {
            "eventAction": "registration",
            "eventDate": "1999-08-25T00:00:00-04:00"
        }
    ],
    "handle": "NET-216-136-96-0-1",
    "ipVersion": "v4",
    "links": [
        {
            "href": "https://rdap.arin.net/registry/ip/216.136.96.0",
            "rel": "self",
            "type": "application/rdap+json",
            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
        },
        {
            "href": "https://whois.arin.net/rest/net/NET-216-136-96-0-1",
            "rel": "alternate",
            "type": "application/xml",
            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
        },
        {
            "href": "https://rdap.arin.net/registry/ip/216.136.0.0/17",
            "rel": "up",
            "type": "application/rdap+json",
            "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
        }
    ],
    "name": "TWTC-BLOCK-03",
    "notices": [
        {
            "description": [
                "By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
            ],
            "links": [
                {
                    "href": "https://www.arin.net/resources/registry/whois/tou/",
                    "rel": "terms-of-service",
                    "type": "text/html",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                }
            ],
            "title": "Terms of Service"
        },
        {
            "description": [
                "If you see inaccuracies in the results, please visit: "
            ],
            "links": [
                {
                    "href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
                    "rel": "inaccuracy-report",
                    "type": "text/html",
                    "value": "https://rdap.arin.net/registry/ip/216.136.127.255"
                }
            ],
            "title": "Whois Inaccuracy Reporting"
        },
        {
            "description": [
                "Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
            ],
            "title": "Copyright Notice"
        }
    ],
    "objectClassName": "ip network",
    "parentHandle": "NET-216-136-0-0-1",
    "port43": "whois.arin.net",
    "rdapConformance": [
        "nro_rdap_profile_0",
        "rdap_level_0",
        "cidr0",
        "arin_originas0"
    ],
    "startAddress": "216.136.96.0",
    "status": [
        "active"
    ],
    "type": "ALLOCATION"
}