AS8683 — NOMINET

Network type: hosting

AS8683 announces 6 IPv4 prefixes covering 9,472 addresses and 7 IPv6 prefixes.

About this network

Nominet UK (NOMINET) is the registry for the .uk top-level domain — the not-for-profit company that runs the .uk namespace and the authoritative DNS behind it. This AS carries Nominet's own registry and DNS infrastructure.

What it's used for

• Registry systems and authoritative name service. Sampled rDNS lands on Nominet's own core estate (nominet.org.uk firewalls and switches, datacentre device names), not on any customer or subscriber population.
• About 9,500 IPv4 addresses across a handful of RIPE prefixes, plus a notably large IPv6 footprint (roughly as many v6 prefixes as v4) — the shape of a DNS operator rather than an access network.
• Every announced block is registered to Nominet itself (NOMINET-CORE-DC1-, NOMINET-DCB netnames, GB).

Notable

• This is critical-infrastructure address space with no honest classification in a hosting/ISP vocabulary: it is neither an eyeball network, a hosting provider, nor a transit carrier. It is deliberately left unclassified rather than forced into one, in the same way root-DNS and IXP ASNs are.
• Nominet peers widely (dozens of BGP neighbours) despite its small address count, which is what an anycast DNS platform looks like.

Interesting

• Beyond .uk, Nominet has operated registry back-end and protective-DNS services for other parties, so a query hitting this space is not necessarily a .uk lookup.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 149.20.96.0/20
• 213.248.228.0/23
• 213.248.232.0/21
• 213.248.240.0/21
• 213.248.249.0/24
• 213.248.252.0/23
• 2a01:618:8000::/33
• 2a01:61c:1000::/39
• 2a01:61c:1a00::/40
• 2a01:61c:2000::/39
• 2a01:61c:2a00::/40
• 2a01:61c:f001::/48
• 2a01:61c:f002::/48

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS2914 NTT America, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS48185 team.blue NV
• AS48362 Stadtwerke Feldkirch
• AS29169 GANDI SAS
• AS17639 Converge ICT Solutions Inc.
• AS50300 CustodianDC Limited
• AS24482 SG.GS
• AS50304 Blix Solutions AS
• AS25091 IP-Max SA
• AS213241 TECHIT.BE SRL
• AS37721 Virtual Technologies & Solutions
• AS12552 GlobalConnect AB
• AS3303 Swisscom (Schweiz) AG
• AS57463 NetIX Communications JSC
• AS37100 SEACOM Limited
• AS3216 PJSC "Vimpelcom"
• AS3741 Dimension Data

Adjacent networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS174 Cogent Communications, LLC
• AS2914 NTT America, Inc.
• AS34549 meerfarbig GmbH & Co. KG
• AS9002 RETN Limited
• AS29169 GANDI SAS
• AS48362 Stadtwerke Feldkirch
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS50300 CustodianDC Limited
• AS48185 team.blue NV
• AS50304 Blix Solutions AS
• AS213241 TECHIT.BE SRL
• AS25091 IP-Max SA
• AS3216 PJSC "Vimpelcom"
• AS12552 GlobalConnect AB
• AS57463 NetIX Communications JSC
• AS3303 Swisscom (Schweiz) AG
• AS37100 SEACOM Limited
• AS37721 Virtual Technologies & Solutions
• AS3741 Dimension Data

Internet exchanges

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