asn.dev

Autonomous system

AS12390 KINGSTON-UK-AS

Unclassified RIPE

IPv4 addresses 251K 23 prefixes
IPv6 prefixes 2 counted as prefixes, not addresses
Countries 1 mostly GB
Exchanges 3 recorded by PCH
Upstreams 25 1 downstream
Flagged prefixes 0 none

Summary

KCOM Group

United Kingdom · AI-generated

isp eyeball broadband legacy

The access network of Hull's own telephone company, the one part of Britain BT never served.

What it's used for

  • Residential and business broadband. 250,880 addresses over 23 IPv4 prefixes, two IPv6 /32s, and 84 observed BGP neighbours.

Notable

  • Every netname is a dated variation on the same stem: UK-KINGSTON-960404, then 990406, 20000616, 20040220, 20070330, 20090119 and 20100422. The holder is registered as KCOM Group Limited; the address records still say Kingston.
  • One block is ADSLPOOL-KCOM, named for what it holds.
  • Reverse DNS runs two brands at once. Static addresses answer as 5-198-95-254.static.kc.net.uk; the older 194.207 space answers as adsl-194-207-223-254.karoo.kcom.com.

Interesting

  • Kingston upon Hull is the exception in British telecoms. When the country's telephone networks were consolidated under the Post Office, Hull's corporation kept the municipal telephone department it had run since the early 1900s, and the city has been served by its own operator ever since instead of by BT. The cream phone boxes were the visible version of that; UK-KINGSTON in the registry is the version that ended up in the routing table.
  • Karoo was the consumer ISP brand, and it is what the ADSL addresses still answer as. Company names change faster than reverse DNS zones, so the marketing history of a network tends to accumulate there rather than get replaced.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

Recorded at 3 exchanges in 1 country, largest first.

ExchangeLocationTheir address
LINX LON1London, United Kingdom195.66.224.119
London Network Access PointLondon, United Kingdom5.57.80.18
LINX ManchesterManchester, United Kingdom195.66.244.24

Transit providers

25 upstream, 1 downstream and 36 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS3356Level 3 Parent, LLC284
AS174Cogent Communications, LLC272
AS6939Hurricane Electric LLC166
AS34549meerfarbig GmbH & Co. KG72
AS50304Blix Solutions AS34
AS24482SG.GS20
AS33891Core-Backbone GmbH20
AS48185team.blue NV20

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-11, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 23 prefixes · 251K addresses IPv6 2 prefixes

CountryNamePrefixes
GBUnited Kingdom25

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS12390
Registry name
KINGSTON-UK-AS
Registrant
KINGSTON-MNT
Abuse contact
abuse@kcom.com
Registered
2002-09-12
Last changed
2023-10-17
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
95% valid · 19 valid, 1 with no ROA
ROAs
19 authorising AS12390
ASPA
no ASPA record
IRR
95% registered · 19 of 20 announcements
Route objects
22 naming AS12390

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 431 networks and 1,768 prefixes, as published 2026-10-12. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check