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ASN

AS5400

Record found
Retrieved · 22 Sep 2026, 19:59 UTC1 sourceView JSON
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01

Registry record

RDAPhttps://rdap.db.ripe.net/autnum/5400
Record found
Record ID
AS5400
AS name
BT
AS number range
AS5400
Registered
2002-08-29T09:47:11Z
Last changed
2026-03-18T06:09:10Z
Status
active
Notices & terms 5

Filtered

This output has been filtered.

Whois Inaccuracy Reporting

If you see inaccuracies in the results, please visit: https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true

Source

Objects returned came from source RIPE

Terms and Conditions

This is the RIPE Database query service. The objects are in RDAP format. http://www.ripe.net/db/support/db-terms-conditions.pdf

Notice

--------------------------------------------- Upstreams: Peers: ALL peering requests see www.bt.net/cgi-bin/peering-request for technical issues, pls contact: peering@bt.com for abuse, pls contact abuse@eu.bt.net 24/7 NOC email / network@bt.com 24/7 NOC phone / +44 203 7882214 opt 1 This object describes non-customer peerings Customer peerings are described in the macro AS-BT-XX (replace XX with the country code NL, UK, BE, IE,etc) Communities scheme: The following BGP communities can be set by BT BGP customers to affect announcements to major peers. ****************************************************** 5400:NXXX N=1 not announce N=2 prepend an extra "5400 5400" on announcement Valid values for XXX: 000 All peers and transits 500 All transits 503 Colt AS3356 509 Arelion AS1299 002 Sprint AS1239 004 Vodafone Global Network AS1273 005 Verizon EMEA AS702 014 DTAG AS3320 016 Orange AS5511 018 Tata Communications Ltd AS6453 023 GTT Communications AS3257 045 Telecom Italia Sparkle AS6762 073 GTT Communications AS286 169 Cogent AS174 177 Telxius Cable AS12956 177 Telefonica Germany GmbH AS6805 190 Comcast AS7922 191 Highwinds Network Group AS12989 300 All other peers ------------------------------------------------------ AS5400 is matching RPKI validation state and reject invalid prefixes from peers and customers. Our looking-glass marks validation state for all prefixes : http://www.bt.net/looking-glass.html Please review your registered ROAs to reduce number of invalid prefixes.

Organizations & contacts

6
Organization / registrant
British Telecommunications Limited
ORG-CNS3-RIPE
Type
org
Address
Pritech Park SEZ, Bellandur village, Varthur Hob KA 560103 Bengaluru INDIA
Phone (voice)
+31 (0)6 3806 7798
Phone (voice)
+31 (0)88 212 8034
Fax
+31 (0)88 212 8083

Registry · rdap.db.ripe.net

Administrative
BT IP Admin
CIA1-RIPE
Type
individual
Address
2nd Floor, Block 12 BT Global Services Pritech Park SEZ Bellandur village, Varthur Hob Bengaluru KA 560103 India
Phone (voice)
+31 (0)88 212 8034

Registry · rdap.db.ripe.net

Technical
BT Support
BS1836-RIPE
Type
group
Address
BT Global Services 2nd Floor, Block 12 Pritech Park SEZ Bellandur village, Varthur Hob Bengaluru KA 560103 India

Registry · rdap.db.ripe.net

Abuse
Abuse-C Role
AR15037-RIPE
Type
group
Address
BT Nederlands N.V. Jaco de Vries - IP Admin AS5400 room 3.33 Offices Minerva Herikerbergweg 2 1101 CM Amsterdam NETHERLANDS
Email (abuse)
abuse@eu.bt.net

Registry · rdap.db.ripe.net

Maintainers CIP-MNT · RIPE-NCC-END-MNT

Registry · RDAP Original response
https://rdap.db.ripe.net/autnum/5400
{
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    "startAutnum": 5400,
    "endAutnum": 5400,
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    ],
    "remarks": [
        {
            "description": [
                "---------------------------------------------",
                "Upstreams:",
                "Peers:",
                "",
                "ALL peering requests see",
                "www.bt.net/cgi-bin/peering-request",
                "for technical issues, pls contact: peering@bt.com",
                "for abuse, pls contact abuse@eu.bt.net",
                "24/7 NOC email / network@bt.com",
                "24/7 NOC phone / +44 203 7882214 opt 1",
                "This object describes non-customer peerings",
                "Customer peerings are described in the macro AS-BT-XX",
                "(replace XX with the country code NL, UK, BE, IE,etc)",
                "Communities scheme:",
                "The following BGP communities can be set by BT",
                "BGP customers to affect announcements to major peers.",
                "******************************************************",
                "5400:NXXX",
                "N=1 not announce",
                "N=2 prepend an extra \"5400 5400\" on announcement",
                "Valid values for XXX:",
                "000 All peers and transits",
                "500 All transits",
                "503 Colt AS3356",
                "509 Arelion AS1299",
                "002 Sprint AS1239",
                "004 Vodafone Global Network AS1273",
                "005 Verizon EMEA AS702",
                "014 DTAG AS3320",
                "016 Orange AS5511",
                "018 Tata Communications Ltd AS6453",
                "023 GTT Communications AS3257",
                "045 Telecom Italia Sparkle AS6762",
                "073 GTT Communications AS286",
                "169 Cogent AS174",
                "177 Telxius Cable AS12956",
                "177 Telefonica Germany GmbH AS6805",
                "190 Comcast AS7922",
                "191 Highwinds Network Group AS12989",
                "300 All other peers",
                "------------------------------------------------------",
                "AS5400 is matching RPKI validation state and reject",
                "invalid prefixes from peers and customers.",
                "Our looking-glass marks validation state for all",
                "prefixes : http://www.bt.net/looking-glass.html",
                "Please review your registered ROAs to reduce number",
                "of invalid prefixes."
            ]
        }
    ],
    "links": [
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "rdap-up",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS5400",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "rdap-up rdap-active",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS5400?status=active",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "rdap-down",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS5400",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "rdap-top",
            "href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS5400",
            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "rdap-top rdap-active",
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            "type": "application/rdap+json"
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        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
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            "type": "application/rdap+json"
        },
        {
            "value": "https://rdap.db.ripe.net/autnum/5400",
            "rel": "self",
            "href": "https://rdap.db.ripe.net/autnum/5400",
            "type": "application/rdap+json"
        },
        {
            "value": "http://www.ripe.net/data-tools/support/documentation/terms",
            "rel": "copyright",
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        }
    ],
    "events": [
        {
            "eventAction": "registration",
            "eventDate": "2002-08-29T09:47:11Z"
        },
        {
            "eventAction": "last changed",
            "eventDate": "2026-03-18T06:09:10Z"
        }
    ],
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    ],
    "notices": [
        {
            "title": "Filtered",
            "description": [
                "This output has been filtered."
            ]
        },
        {
            "title": "Whois Inaccuracy Reporting",
            "description": [
                "If you see inaccuracies in the results, please visit:"
            ],
            "links": [
                {
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                    "type": "text/html"
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            ]
        },
        {
            "title": "Source",
            "description": [
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                "RIPE"
            ]
        },
        {
            "title": "Terms and Conditions",
            "description": [
                "This is the RIPE Database query service. The objects are in RDAP format."
            ],
            "links": [
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                    "type": "application/pdf"
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    ],
    "port43": "whois.ripe.net",
    "objectClassName": "autnum",
    "redacted": [
        {
            "name": {
                "description": "Personal e-mail information"
            },
            "reason": {
                "description": "Personal data"
            },
            "prePath": "$.entities[?(@.handle=='BS1836-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
            "method": "removal"
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        {
            "name": {
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            "reason": {
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        {
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            "method": "removal"
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        {
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                "description": "Personal e-mail information"
            },
            "reason": {
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            },
            "prePath": "$.entities[?(@.handle=='AR15037-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
            "method": "removal"
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}