AS12390 — KINGSTON-UK-AS KCOM Group Limited

AS12390 announces 22 IPv4 prefixes covering 249,856 addresses and 2 IPv6 prefixes.

About this network

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.

Announced prefixes

• 5.198.0.0/17
• 77.86.0.0/17
• 83.100.128.0/17
• 87.102.0.0/17
• 94.72.192.0/19
• 94.72.224.0/20
• 94.72.240.0/21
• 159.253.64.0/23
• 159.253.68.0/22
• 159.253.72.0/21
• 178.78.64.0/19
• 178.78.96.0/21
• 178.78.104.0/23
• 185.188.232.0/22
• 194.207.64.0/18
• 194.207.128.0/17
• 212.50.160.0/19
• 213.249.128.0/19
• 213.249.160.0/20
• 213.249.176.0/21
• 213.249.184.0/22
• 213.249.192.0/18
• 2a00:4900::/32
• 2a00:4902::/32

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS48185 team.blue NV
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS3741 Dimension Data
• AS6797 GlobalConnect AB
• AS4657 StarHub Ltd
• AS12779 IT.Gate S.p.A.
• AS9002 RETN Limited
• AS48362 Stadtwerke Feldkirch
• AS25091 IP-Max SA

Downstream networks

• AS203067 GIACOM (CLOUD) LIMITED

Adjacent networks

• AS174 Cogent Communications, LLC
• AS3356 Level 3 Parent, LLC
• AS203067 GIACOM (CLOUD) LIMITED
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS50304 Blix Solutions AS
• AS48185 team.blue NV
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS37721 Virtual Technologies & Solutions
• AS50300 CustodianDC Limited
• AS4657 StarHub Ltd
• AS3741 Dimension Data
• AS6797 GlobalConnect AB
• AS33891 Core-Backbone GmbH
• AS3216 PJSC "Vimpelcom"
• AS12779 IT.Gate S.p.A.
• AS37100 SEACOM Limited
• AS48362 Stadtwerke Feldkirch
• AS9002 RETN Limited
• AS25091 IP-Max SA

Routing security

• RPKI: 19 valid, 0 invalid and 1 not-found announcements; 19 ROAs.
• ASPA: none published.
• IRR: 95% of announcements registered; 22 route objects.
• Listed in as-sets: AS-BSVE:AS-LINX-PEERS-1, AS-BSVE:AS-LINX-PEERS-2, AS-BSVE:AS-LONAP-PEERS-1, AS-BSVE:AS-LONAP-PEERS-2, AS-BSVE:AS-MANAP-PEERS-1, AS-BSVE:AS-MANAP-PEERS-2, AS-BTN-CUSTOMERS, AS-CWCUSTEU, AS-KINGSTONUK, AS-KINMEDIA, AS-LIQUID-LINXPEERS, AS-LONAP-CONNECTED, AS-LONAP-MLP, AS-LONAP-MLP-V6, AS-MANDA-LINX-PEERS-V4, AS-PIGNETWORK, AS-PLUSNETUK:AS-LINX-PEERS-PRI, AS-PLUSNETUK:AS-LINX-PEERS-SEC, AS-PLUSNETUK:AS-LONAP-PEERS-PRI, AS-PLUSNETUK:AS-LONAP-PEERS-SEC, AS-TMNET-PEERS, AS-XO-B, AS12703:AS-PEERS, AS51202:AS-ALL, AS5564:AS-SOL-MANAP-PEERS.

Internet exchanges

• LINX LON1 — London, United Kingdom
• London Network Access Point — London, United Kingdom
• LINX Manchester — Manchester, United Kingdom