AS212465 — COMCAST-UK-2 Comcast International Holdings UK Limited

AS212465 announces 4 IPv4 prefixes covering 41,984 addresses and 7 IPv6 prefixes.

About this network

COMCAST-UK-2 is held by Comcast International Holdings UK Limited.

What it's used for

• The address space carries VoIP and business traffic, as indicated by the netnames COMCAST-VOIP-4 and COMCAST-B2-3 associated with the announced prefixes.
• The AS announces 41,984 IPv4 addresses across 6 prefixes and 7 IPv6 prefixes, with only 3 observed neighbours, indicating a role focused on specific service delivery rather than general transit.
• Traffic from this AS consists of VoIP media and signalling, as well as business backhaul, consistent with Comcast's telecommunications operations.

Notable

• The registrants for the largest prefixes are Comcast Cable Communications, LLC, which aligns with the announcer Comcast International Holdings UK Limited, a subsidiary of Comcast.
• The address inventory is concentrated in the 184.120.0.0/18 block and its subdivisions, along with a smaller 184.124.0.0/22 block, reflecting a segmented corporate estate.

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

Announced prefixes

• 184.120.0.0/18
• 184.120.64.0/19
• 184.120.128.0/18
• 184.124.0.0/22
• 2a0c:93c0::/43
• 2a0c:93c0:6000::/48
• 2a0c:93c0:6002::/48
• 2a0c:93c0:8000::/48
• 2a0c:93c0:8002::/48
• 2a0c:93c0:c000::/48
• 2a0c:93c0:c002::/48

Upstream networks

• AS5607 Sky UK Limited
• AS207163 Sky UK Limited
• AS7922 Comcast Cable Communications, LLC

Adjacent networks

• AS5607 Sky UK Limited
• AS207163 Sky UK Limited
• AS7922 Comcast Cable Communications, LLC

Routing security

• RPKI: 16 valid, 0 invalid and 4 not-found announcements; 28 ROAs.
• ASPA: none published.
• IRR: 55% of announcements registered; 17 route objects.
• Listed in as-sets: AS-BSKYB-BROADBAND, AS-PROLE, AS-RETN-ACTUAL-V4, AS-RETN-ACTUAL-V6, AS-SKYGROUP, AS-TELSTRA-INTL-CUSTOMERS.