Organization
RETN Limited
RETN-IT-AS
Registered
Sep 19, 2018
8 years ago
IPv4 Prefixes
1
512 addresses
IPv6 Prefixes
0
BGP Neighbours
3
2 upstream/peer · 1 downstream
Registration
AS Number AS210203 AS Name RETN-IT-AS Organization RETN Limited Organization ID ORG-RL19-RIPE Address 5 Greenwich View Place, E14 9NN, London, UNITED KINGDOM Country United Kingdom (GB) Registry RIPE NCC Allocated Sep 19, 2018 Record Created Sep 19, 2018 Last Updated Apr 16, 2026 Status
active
WHOIS Server whois.ripe.net AS Description RETN-IT-AS - RETN Limited, GB Remarks ---------------------------------------------------------------, *********************** Routing Policy ************************, ****************** RETN bgp confederation *********************, - AS9002, - AS14947, - AS25462, - AS28886, - AS29470, - AS44877, - AS51327, - AS57304, - AS60392, - AS133… Abuse Email [email protected] Abuse Phone +44 2075176400 IPv4 Prefixes
1 prefix · 512 addresses Routing data as of 2026-10-12 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 139.45.198.0/23 | 139.45.198.0 – 139.45.199.255 | 512 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
3 unique neighbours · 2 upstream/peer · 1 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Networks seen to the right of this AS in BGP paths — networks whose routes it carries, typically its customers (downstreams). Upstream & peer side (2)
Downstream side (1)
AS Name AS paths IPv4 sightings IPv6 sightings AS24429 Taobao - Zhejiang Taobao Network Co.,Ltd 7 14 0
Raw RDAP Response
{
"handle": "AS210203",
"startAutnum": 210203,
"endAutnum": 210203,
"name": "RETN-IT-AS",
"status": [
"active"
],
"entities": [
{
"handle": "MNT-RETN",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/MNT-RETN"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "ORG-RL19-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"RETN Limited"
],
[
"kind",
{},
"text",
"org"
],
[
"adr",
{
"label": "5 Greenwich View Place\nE14 9NN\nLondon\nUNITED KINGDOM"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 20 75176400"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/ORG-RL19-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "RCD1-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"RETN.net Contacts Data"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "5th Floor, 3 Harbour Exchange Square\nLondon, E14 9GE, UK"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 2075176400"
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
],
"roles": [
"administrative",
"technical"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/RCD1-RIPE"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "RIPE-NCC-END-MNT",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/RIPE-NCC-END-MNT"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
},
{
"handle": "RCD1-RIPE",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"RETN.net Contacts Data"
],
[
"kind",
{},
"text",
"group"
],
[
"adr",
{
"label": "5th Floor, 3 Harbour Exchange Square\nLondon, E14 9GE, UK"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"tel",
{
"type": "voice"
},
"text",
"+44 2075176400"
],
[
"email",
{
"type": "abuse"
},
"text",
"[email protected]"
]
]
],
"roles": [
"abuse"
],
"entities": [
{
"handle": "MNT-RETN",
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"REDACTED"
],
[
"kind",
{},
"text",
"individual"
]
]
],
"roles": [
"registrant"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/entity/MNT-RETN"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"objectClassName": "entity"
}
],
"objectClassName": "entity"
}
],
"remarks": [
{
"description": [
"",
"---------------------------------------------------------------",
"*********************** Routing Policy ************************",
"****************** RETN bgp confederation *********************",
"- AS9002",
"- AS14947",
"- AS25462",
"- AS28886",
"- AS29470",
"- AS44877",
"- AS51327",
"- AS57304",
"- AS60392",
"- AS133405",
"- AS134518",
"- AS139903",
"- AS150003",
"- AS198947",
"- AS209447",
"- AS210203",
"- AS214455",
"- AS214845",
"********************* Contacts and URLs ***********************",
"Routing issues noc at retn.net",
"Peering issues and requests peering at retn.net",
"SPAM and security issues abuse at retn.net",
"Web Site http://retn.net",
"Looking Glass http://lg.retn.net",
"BGP communities list http://retn.net/bgp-communities",
"or http://lg.retn.net/bgp-communities.html"
]
}
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-up",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS210203",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-up rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-up/AS210203?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-down",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-down/AS210203",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-top",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS210203",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-top rdap-active",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-top/AS210203?status=active",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "rdap-bottom",
"href": "https://rdap.db.ripe.net/autnums/rirSearch1/rdap-bottom/AS210203",
"type": "application/rdap+json"
},
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "self",
"href": "https://rdap.db.ripe.net/autnum/210203",
"type": "application/rdap+json"
},
{
"value": "http://www.ripe.net/data-tools/support/documentation/terms",
"rel": "copyright",
"href": "http://www.ripe.net/data-tools/support/documentation/terms"
}
],
"events": [
{
"eventAction": "registration",
"eventDate": "2018-09-19T10:17:57Z"
},
{
"eventAction": "last changed",
"eventDate": "2026-04-16T19:59:02Z"
}
],
"rdapConformance": [
"nro_rdap_profile_asn_flat_0",
"rirSearch1",
"autnums",
"cidr0",
"rdap_level_0",
"nro_rdap_profile_0",
"redacted"
],
"notices": [
{
"title": "Filtered",
"description": [
"This output has been filtered."
]
},
{
"title": "Whois Inaccuracy Reporting",
"description": [
"If you see inaccuracies in the results, please visit:"
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "inaccuracy-report",
"href": "https://www.ripe.net/contact-form?topic=ripe_dbm&show_form=true",
"type": "text/html"
}
]
},
{
"title": "Source",
"description": [
"Objects returned came from source",
"RIPE"
]
},
{
"title": "Terms and Conditions",
"description": [
"This is the RIPE Database query service. The objects are in RDAP format."
],
"links": [
{
"value": "https://rdap.db.ripe.net/autnum/210203",
"rel": "terms-of-service",
"href": "http://www.ripe.net/db/support/db-terms-conditions.pdf",
"type": "application/pdf"
}
]
}
],
"port43": "whois.ripe.net",
"objectClassName": "autnum",
"redacted": [
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='ORG-RL19-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='RCD1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
},
{
"name": {
"description": "Personal e-mail information"
},
"reason": {
"description": "Personal data"
},
"prePath": "$.entities[?(@.handle=='RCD1-RIPE')].vcardArray[1][?(@[0]=='e-mail')]",
"method": "removal"
}
]
} Contact details of private individuals are redacted.