IP Judge ipjudge.org

United States · ASN

AS21508 · COMCAST-21508 - Comcast Cable Communications, LLC

COMCAST-21508 - Comcast Cable Communications, LLC is registered in United States (ARIN). It currently announces 17 IPv4 prefixes (about 70,400 addresses) and 61 IPv6 prefixes in the global routing table; PeeringDB lists it as “Cable/DSL/ISP”.

Country / region
United States
ARIN
IPv4 addresses
70,400
17 prefixes
IPv6
61
prefixes
Upstream / downstream
1 / 51
neighbours

AI platforms by the network’s registered country; the exit IP’s location is what counts

ChatGPTClaudeGeminiMuse

IPs checked on IP Judge datacenter / proxy IPs listed; residential and mobile only counted

No IP from this network has been checked yet.

Neighbouring networks

Upstreams (transit providers)

AS7922 · COMCAST-7922 - Comcast Cable

Downstreams (networks connected through it)

AS13335 · CLOUDFLARENET - Cloudflare, AS54113 · FASTLY - Fastly, Inc.AS400114 · APOG-RBC - Apogee Telecom InAS396083 · ARVUS-160-84 - Framatome IncAS36364 · MHSNET - Mary Washington HosAS40641 · MGWTEL - MGW Telephone CompaAS399099 · PCPS-ASN - petersburg city pAS54219 · SCHAWK-INC - Matthews InternAS36040 · YOUTUBE - Google LLCAS54883 · CORVA - City of Richmond, ViAS15297 · EPLUS-ASN - EPLUS, Inc.AS32540 · HP-HOOD - HP Hood

IPv4 prefixes 17 total

50.204.101.0/2450.205.217.0/2450.216.229.0/2450.217.1.0/2450.217.207.0/2450.218.47.0/2450.228.113.0/2450.229.113.0/2450.229.114.0/2450.235.34.0/24141.104.0.0/16157.240.147.0/24157.240.148.0/24173.242.174.0/24198.90.112.0/22204.194.47.0/24205.223.19.0/24

IPv6 prefixes 61 total

2001:559:220::/482001:559:243::/482001:559:280::/482001:559:37d::/482001:559:3ac::/482001:559:3b9::/482001:559:3c8::/482001:559:40a::/482001:559:49a::/482001:559:49b::/482001:559:53c::/482001:559:5c9::/482001:559:5db::/482001:559:72b::/482001:559:73c::/482001:559:788::/482001:559:78a::/482001:559:79d::/482001:559:79e::/482001:559:7a7::/482001:559:7db::/482001:559:804c::/482001:559:81bf::/482001:559:81d7::/482001:559:81d8::/482001:559:8201::/482001:559:82fd::/482001:559:833e::/482001:559:8416::/482001:559:841c::/482001:559:8445::/482001:559:8535::/482001:559:85c1::/482001:559:85ff::/482001:559:8604::/482001:559:871a::/482001:559:875f::/482001:559:8773::/482001:559:87b2::/482001:559:8a::/482001:559:c071::/482001:559:c0::/482001:559:c0f6::/482001:559:c0f7::/482001:559:c10a::/482001:559:c174::/482001:559:c1a5::/482001:559:c1ca::/482001:559:c28f::/482001:559:c290::/482001:559:c2a7::/482001:559:c344::/482001:559:c3e9::/482001:559:c458::/482001:559:c45f::/482001:559:c460::/482001:559:c4db::/482001:559:c4f6::/482001:559:c515::/482001:559:c538::/482001:559:f7::/48

Sources: RIPEstat (regional registry allocations and RIS routing data), PeeringDB, IP Judge lookups. Routing data refreshes daily.