Whois & RDAP Lookup
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RDAPIP Range2a00:23c0:: - 2a00:23df:ffff:ffff:ffff:ffff:ffff:ffff
Handle2a00:23c0::/27
NameBTBROADBAND
TypeALLOCATED-BY-LIR
CountryGB
HolderBTENT-MNT
Registered2015-09-09 15:34 UTC
Updated2015-09-09 15:34 UTC
RegistrantBTENT-MNT
Admin ContactBT Corporate Registry
Email[email protected]
AddressBritish Telecommunications, 81 Newgate Street, London GB
Tech ContactBT Corporate Registry
Email[email protected]
AddressBritish Telecommunications, 81 Newgate Street, London GB
Abuse Contact[email protected]
Statusactive
Registry RDAPhttps://rdap.db.ripe.net
Raw WHOIS response
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% To receive output for a database update, use the "-B" flag.
% Information related to '2a00:23c0::/27'
% Abuse contact for '2a00:23c0::/27' is '[email protected]'
inet6num: 2a00:23c0::/27
netname: BTBROADBAND
descr: BTBROADBAND
country: GB
org: ORG-BT4-RIPE
admin-c: BTCR1-RIPE
tech-c: BTCR1-RIPE
status: ALLOCATED-BY-LIR
mnt-by: BTENT-MNT
mnt-lower: BTENT-MNT
mnt-routes: BTNET-MNT
mnt-domains: BTENT-MNT
created: 2015-09-09T15:34:31Z
last-modified: 2015-09-09T15:34:31Z
source: RIPE # Filtered
organisation: ORG-BT4-RIPE
org-name: British Telecommunications Limited
country: GB
reg-nr: 01800000
org-type: LIR
address: pp HWJ380, PO Box 78961
1 Braham Street
address: E1W 9TD
address: London
address: UNITED KINGDOM
phone: +44 3316 260934
admin-c: BTCR1-RIPE
admin-c: MS35380-RIPE
mnt-ref: BTENT-MNT
mnt-ref: RIPE-NCC-HM-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: BTENT-MNT
abuse-c: BTCR3-RIPE
created: 2004-04-17T12:11:54Z
last-modified: 2026-06-29T12:02:58Z
source: RIPE # Filtered
role: BT Corporate Registry
address: British Telecommunications
address: 81 Newgate Street
address: London GB
admin-c: BCER1-RIPE
admin-c: MS35380-RIPE
tech-c: BCER1-RIPE
tech-c: MS35380-RIPE
nic-hdl: BTCR1-RIPE
abuse-mailbox: [email protected]
mnt-by: BTENT-MNT
created: 2002-03-22T09:16:45Z
last-modified: 2025-03-21T10:14:06Z
source: RIPE # Filtered
% Information related to '2a00:2380::/25AS2856'
route6: 2a00:2380::/25
descr: BT UK aggregate
origin: AS2856
mnt-by: CIP-MNT
mnt-by: BTNET-MNT
mnt-by: BTENT-MNT
created: 2013-11-18T09:53:59Z
last-modified: 2013-11-18T09:53:59Z
source: RIPE
% This query was served by the RIPE Database Query Service version 1.124.1 (DEXTER)
% Query time: 928 msec
% WHEN: Sat Sep 19 16:39:21 UTC 2026Raw RDAP JSON (registry) https://rdap.db.ripe.net
{
"cidr0_cidrs": [
{
"length": 27,
"v6prefix": "2a00:23c0::"
}
],
"country": "GB",
"endAddress": "2a00:23df:ffff:ffff:ffff:ffff:ffff:ffff",
"entities": [
{
"handle": "BTCR1-RIPE",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/BTCR1-RIPE",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"administrative",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"BT Corporate Registry"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "British Telecommunications\n81 Newgate Street\nLondon GB"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
]
},
{
"handle": "BTENT-MNT",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/BTENT-MNT",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"BTENT-MNT"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"handle": "ORG-BT4-RIPE",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/ORG-BT4-RIPE",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"British Telecommunications Limited"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "pp HWJ380, PO Box 78961 1 Braham Street\nE1W 9TD\nLondon\nUNITED KINGDOM"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 3316 260934"
]
]
]
},
{
"entities": [
{
"handle": "BCER1-RIPE",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/BCER1-RIPE",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"administrative",
"technical"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"BT Computer Emergency Response Team"
],
[
"kind",
{},
"text",
"individual"
],
[
"adr",
{
"label": "PP L16\nPheonix House\n202 Elder Gate\nMilton Keynes\nBuckinghamshire\nMK9 1BE"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 1908 609 271"
],
[
"tel",
{
"type": "fax"
},
"text",
"+44 1908 230 343"
]
]
]
},
{
"handle": "BTENT-MNT",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/BTENT-MNT",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"BTENT-MNT"
],
[
"kind",
{},
"text",
"individual"
]
]
]
},
{
"handle": "MS35380-RIPE",
"links": [
{
"href": "https://rdap.db.ripe.net/entity/MS35380-RIPE",
"rel": "self",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity",
"roles": [
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Mohammed Sajid"
],
[
"kind",
{},
"text",
"individual"
],
[
"adr",
{
"label": "pp HWJ380\nPO Box 78961\n1 Braham Street\nLondon\nE1W 9TD"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 3316 640745"
]
]
]
}
],
"handle": "BTCR3-RIPE",
"objectClassName": "entity",
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"BT Corporate Registry"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "British Telecommunications\n81 Newgate Street\nLondon GB"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
]
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2015-09-09T15:34:31Z"
},
{
"eventAction": "last changed",
"eventDate": "2015-09-09T15:34:31Z"
}
],
"handle": "2a00:23c0::/27",
"ipVersion": "v6",
"links": [
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-up/2a00:23c0::/27",
"rel": "rdap-up",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-up/2a00:23c0::/27?status=active",
"rel": "rdap-up rdap-active",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-down/2a00:23c0::/27",
"rel": "rdap-down",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-top/2a00:23c0::/27",
"rel": "rdap-top",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-top/2a00:23c0::/27?status=active",
"rel": "rdap-top rdap-active",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ips/rirSearch1/rdap-bottom/2a00:23c0::/27",
"rel": "rdap-bottom",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "https://rdap.db.ripe.net/ip/2a00:23c9::/32",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
},
{
"href": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"value": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"name": "BTBROADBAND",
"notices": [
{
"description": [
"This output has been filtered."
],
"title": "Filtered"
},
{
"description": [
"If you see inaccuracies in the results, please visit:"
],
"links": [
{
"href": "https://www.ripe.net/contact-form?topic=ripe_dbm\u0026show_form=true",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Objects returned came from source",
"RIPE"
],
"title": "Source"
},
{
"description": [
"This is the RIPE Database query service. The objects are in RDAP format."
],
"links": [
{
"href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
"rel": "terms-of-service",
"type": "application/pdf",
"value": "https://rdap.db.ripe.net/ip/2a00:23c9::/32"
}
],
"title": "Terms and Conditions"
}
],
"objectClassName": "ip network",
"parentHandle": "2a00:2380::/25",
"port43": "whois.ripe.net",
"rdapConformance": [
"geofeed1",
"rirSearch1",
"ips",
"cidr0",
"rdap_level_0",
"nro_rdap_profile_0",
"redacted"
],
"redacted": [
{
"method": "removal",
"name": {
"description": "Personal e-mail information"
},
"prePath": "$.entities[?(@.handle=='BTCR1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"reason": {
"description": "Personal data"
}
},
{
"method": "removal",
"name": {
"description": "Personal e-mail information"
},
"prePath": "$.entities[?(@.handle=='ORG-BT4-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"reason": {
"description": "Personal data"
}
},
{
"method": "removal",
"name": {
"description": "Personal e-mail information"
},
"prePath": "$.entities[?(@.handle=='BTCR3-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"reason": {
"description": "Personal data"
}
}
],
"remarks": [
{
"description": [
"BTBROADBAND"
]
}
],
"startAddress": "2a00:23c0::",
"status": [
"active"
],
"type": "ALLOCATED-BY-LIR"
}Frequently asked questions
What is WHOIS?
WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.
What is RDAP, and how does it differ?
RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.
What is the difference between a registrar and a registrant?
The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.
What are nameservers?
Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.
Why is the contact information redacted?
Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.