AS43519 — NOMINETANYCAST Nominet UK

Network type: hosting

AS43519 announces 10 IPv4 prefixes covering 8,704 addresses and 12 IPv6 prefixes.

About this network

NOMINETANYCAST is operated by Nominet UK, the registry operator for the .uk and .co.uk domain namespaces.

What it's used for

• The address space carries registry infrastructure and DNS services, evidenced by netnames UK-NOMINET-20030514, NOMINET, and NOMINET-AP, and reverse DNS entries pointing to nominet.org.uk.
• With 8,704 IPv4 addresses and 15 IPv6 prefixes announced against 130 observed neighbours, the high neighbour count relative to the address inventory indicates a transit or peering-heavy role typical of a major infrastructure provider.
• Traffic from this AS consists of DNS resolution queries, registry API interactions, and internal management traffic for the .uk domain ecosystem.

Notable

• Registrants consistently identify as Nominet UK entities, including Nominet UK Admin and Nominet administrator, aligning with the AS holder.
• The inventory includes prefixes with netnames UK-DWP and UKNHS-D2U0B, indicating that specific address blocks are allocated to or managed for UK government departments (Department for Work and Pensions, National Health Service) under Nominet's administration.
• The address inventory is a mix of /21, /22, and /23 blocks, with the largest being 213.248.216.0/21.

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

Announced prefixes

• 43.230.48.0/22
• 51.149.0.0/23
• 51.149.254.0/23
• 103.49.80.0/22
• 194.227.194.0/23
• 212.148.212.0/23
• 213.248.200.0/22
• 213.248.204.0/23
• 213.248.216.0/21
• 213.248.224.0/22
• 2401:fd80:105::/48
• 2401:fd80:106::/47
• 2401:fd80:108::/48
• 2401:fd80:1fd::/48
• 2401:fd80:400::/44
• 2a01:618:200::/46
• 2a01:618:400::/44
• 2a01:61e:1::/48
• 2a01:61e:2::/47
• 2a01:61e:4::/46
• 2a0d:9b80::/47
• 2a0d:9b80:fe::/47

Upstream networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS3257 GTT Communications Inc.
• AS9002 RETN Limited
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS17639 Converge ICT Solutions Inc.
• AS48362 Stadtwerke Feldkirch
• AS50304 Blix Solutions AS
• AS25091 IP-Max SA
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS34019 Hivane Association
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS4657 StarHub Ltd
• AS8218 Zayo Infrastructure France SA
• AS29632 Netassist International EOOD
• AS213241 TECHIT.BE SRL
• AS7575 Australian Academic and Research Network (AARNet)
• AS12552 GlobalConnect AB

Adjacent networks

• AS1299 Arelion Sweden AB
• AS6939 Hurricane Electric LLC
• AS2914 NTT America, Inc.
• AS3257 GTT Communications Inc.
• AS9002 RETN Limited
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS37721 Virtual Technologies & Solutions
• AS33891 Core-Backbone GmbH
• AS17639 Converge ICT Solutions Inc.
• AS48362 Stadtwerke Feldkirch
• AS50304 Blix Solutions AS
• AS25091 IP-Max SA
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS34019 Hivane Association
• AS4657 StarHub Ltd
• AS3216 PJSC "Vimpelcom"
• AS37100 SEACOM Limited
• AS8218 Zayo Infrastructure France SA
• AS29632 Netassist International EOOD
• AS213241 TECHIT.BE SRL
• AS7575 Australian Academic and Research Network (AARNet)
• AS34927 iFog GmbH

Routing security

• RPKI: 74 valid, 0 invalid and 0 not-found announcements; 92 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 190 route objects.
• Listed in as-sets: AS-HOSTVIRTUAL, AS-LONAP-CONNECTED, AS-LONAP-MLP, AS-LONAP-MLP-V6, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-LINX-PEERS-V6, AS-NETACTUATE, AS-NOMINET-NS, AS-SFMIX-RS, AS6777:AS-AMS-IX-RS, AS6777:AS-AMS-IX-RS-SETS, AS6777:AS-AMS-IX-RS-SETS-V6, AS6777:AS-AMS-IX-RS-V6, AS680:AS-AMSIX-RS-PEERS.

Internet exchanges

• LINX LON1 — London, United Kingdom
• AMS-IX Amsterdam — Amsterdam, Netherlands
• London Network Access Point — London, United Kingdom
• LINX Manchester — Manchester, United Kingdom
• San Francisco Metropolitan Internet Exchange — San Francisco, United States
• LINX NoVa — Reston, United States