Domain, IP & ASN lookup.

{
    "rdapConformance": [
        "history_version_0",
        "nro_rdap_profile_0",
        "cidr0",
        "rdap_level_0"
    ],
    "notices": [
        {
            "title": "Source",
            "description": [
                "Objects returned came from source",
                "APNIC"
            ]
        },
        {
            "title": "Terms and Conditions",
            "description": [
                "This is the APNIC WHOIS Database query service. The objects are in RDAP format."
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/192.83.166.0/23",
                    "rel": "terms-of-service",
                    "href": "http://www.apnic.net/db/dbcopyright.html",
                    "type": "text/html"
                }
            ]
        },
        {
            "title": "Whois Inaccuracy Reporting",
            "description": [
                "If you see inaccuracies in the results, please visit: "
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/192.83.166.0/23",
                    "rel": "inaccuracy-report",
                    "href": "https://www.apnic.net/manage-ip/using-whois/abuse-and-spamming/invalid-contact-form",
                    "type": "text/html"
                }
            ]
        }
    ],
    "country": "AU",
    "name": "ERX-NETBLOCK",
    "events": [
        {
            "eventAction": "registration",
            "eventDate": "2008-09-04T06:51:29Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2026-09-23T22:43:39Z"
        }
    ],
    "links": [
        {
            "value": "https://rdap.apnic.net/ip/192.83.166.0/23",
            "rel": "self",
            "href": "https://rdap.apnic.net/ip/192.0.0.0/8",
            "type": "application/rdap+json"
        }
    ],
    "remarks": [
        {
            "description": [
                "Early registration addresses"
            ],
            "title": "description"
        },
        {
            "description": [
                "------------------------------------------------------",
                "Important:",
                "",
                "Networks in this range were allocated by InterNIC",
                "prior to the formation of Regional Internet",
                "Registries (RIRs): AfriNIC, APNIC, ARIN, LACNIC and RIPE NCC.",
                "",
                "Address ranges from this historical space have now",
                "been transferred to the appropriate RIR database.",
                "",
                "If your search has returned this record, it means the",
                "address range is not administered by APNIC.",
                "",
                "Instead, please search one of the following databases:",
                "",
                "- AfriNIC (Africa)",
                "website: http://www.afrinic.net/",
                "command line: whois.afrinic.net",
                "",
                "- ARIN (Northern America)",
                "website: http://www.arin.net/",
                "command line: whois.arin.net",
                "",
                "- LACNIC (Latin America and the Carribean)",
                "website: http://www.lacnic.net/",
                "command line: whois.lacnic.net",
                "",
                "- RIPE NCC (Europe)",
                "website: http://www.ripe.net/",
                "command line: whois.ripe.net",
                "",
                "For information on the Early Registration Transfer",
                "(ERX) project, see:",
                "",
                "http://www.apnic.net/db/erx",
                "",
                "------------------------------------------------------"
            ],
            "title": "remarks"
        }
    ],
    "entities": [
        {
            "roles": [
                "technical",
                "administrative"
            ],
            "events": [
                {
                    "eventAction": "registration",
                    "eventDate": "2008-09-04T07:54:16Z"
                },
                {
                    "eventAction": "last changed",
                    "eventDate": "2018-06-22T22:34:30Z"
                }
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/192.83.166.0/23",
                    "rel": "self",
                    "href": "https://rdap.apnic.net/entity/IANA1-AP",
                    "type": "application/rdap+json"
                }
            ],
            "remarks": [
                {
                    "description": [
                        "For more information on IANA services",
                        "go to IANA web site at http://www.iana.org."
                    ],
                    "title": "remarks"
                }
            ],
            "handle": "IANA1-AP",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "Internet Assigned Numbers Authority"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "adr",
                        {
                            "label": "see http://www.iana.org."
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ]
                ]
            ]
        },
        {
            "roles": [
                "abuse"
            ],
            "events": [
                {
                    "eventAction": "registration",
                    "eventDate": "2010-11-11T01:36:22Z"
                },
                {
                    "eventAction": "last changed",
                    "eventDate": "2025-11-18T00:26:21Z"
                }
            ],
            "links": [
                {
                    "value": "https://rdap.apnic.net/ip/192.83.166.0/23",
                    "rel": "self",
                    "href": "https://rdap.apnic.net/entity/IRT-APNIC-AP",
                    "type": "application/rdap+json"
                }
            ],
            "remarks": [
                {
                    "description": [
                        "APNIC is a Regional Internet Registry.",
                        "We do not operate the referring network and",
                        "are unable to investigate complaints of network abuse.",
                        "For information about IRT, see www.apnic.net/irt",
                        "helpdesk@apnic.net was validated on 2020-02-03"
                    ],
                    "title": "remarks"
                }
            ],
            "handle": "IRT-APNIC-AP",
            "objectClassName": "entity",
            "vcardArray": [
                "vcard",
                [
                    [
                        "version",
                        [],
                        "text",
                        "4.0"
                    ],
                    [
                        "fn",
                        [],
                        "text",
                        "IRT-APNIC-AP"
                    ],
                    [
                        "kind",
                        [],
                        "text",
                        "group"
                    ],
                    [
                        "adr",
                        {
                            "label": "Brisbane, Australia"
                        },
                        "text",
                        [
                            "",
                            "",
                            "",
                            "",
                            "",
                            "",
                            ""
                        ]
                    ],
                    [
                        "email",
                        [],
                        "text",
                        "helpdesk@apnic.net"
                    ],
                    [
                        "email",
                        {
                            "pref": "1"
                        },
                        "text",
                        "helpdesk@apnic.net"
                    ]
                ]
            ]
        }
    ],
    "handle": "192.0.0.0 - 192.255.255.255",
    "type": "ALLOCATED PORTABLE",
    "startAddress": "192.0.0.0",
    "endAddress": "192.255.255.255",
    "objectClassName": "ip network",
    "ipVersion": "v4",
    "cidr0_cidrs": [
        {
            "v4prefix": "192.0.0.0",
            "length": 8
        }
    ],
    "port43": "whois.apnic.net"
}