COMCAST CABLE COMMUNICATIONS, LLC

Comcast Cable Communications, LLC
GLEIF verified
LEI
549300T2R1ZBGV1UVE31
Registered name
COMCAST CABLE COMMUNICATIONS, LLC
Jurisdiction
US-DE
Ultimate parent
COMCAST CORPORATION
51M0QTTNCGUN7KFCFZ59
Cluster stats
Netblocks4,056
All fragments 4,100 blocks across 9 clusters
Cluster ID204397238
RegistryBGP
Owner jurisdictionUS-DE
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 549300T2R1ZBGV1UVE31
Shared handles clustered on 77 shared RIR contact/maintainer handles
Registry names 16 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

4 weekly snapshots · JSON
4,056 -2 netblocks since 2026-07-05
2026-07-05 peak 4,058 2026-07-13

IP Ranges (4,056)

showing 50 of 4,056 — see all — ⬇ export CSV (free export limited to 500 rows — subscribe for the full export)
CIDR Org name Registry Status Confidence
5.182.186.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.187.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.192.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.193.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.194.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.195.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
5.182.198.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
9.142.0.0/19 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
9.142.48.0/20 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
9.142.96.0/19 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
9.142.118.0/23 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.24.0.0/15 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.30.0.0/15 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.68.0.0/14 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.227.64.0/22 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.227.92.0/22 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.234.144.0/22 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.234.152.0/22 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.249.160.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
23.249.170.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.0.0.0/12 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.16.0.0/13 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.30.0.0/17 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.34.0.0/16 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.40.0.0/18 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.40.64.0/20 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.60.0.0/14 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.75.216.0/22 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.91.0.0/16 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.98.0.0/15 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.0.0/17 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.42.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.46.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.58.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.72.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.73.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.75.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.124.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.125.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.128.0/19 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.138.0/23 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.143.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.146.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.150.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.104.156.0/24 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.118.0.0/16 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.124.128.0/17 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.125.0.0/16 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.126.0.0/15 Comcast Cable Communications, LLC BGP ANNOUNCED ● high
24.128.0.0/16 Comcast Cable Communications, LLC BGP ANNOUNCED ● high

Corporate group (4 confirmed entities)

+34 additional unconfirmed candidates not shown — full list (JSON)

Network trust

what's this?
RPKI hygiene: A how networks compare →
97.3% of checked blocks have valid RPKI ROA coverage (1,946 of 2,000, sampled from 4,056)
Possible discrepancies (21)

These blocks are registered to Comcast Cable Communications, LLC but cryptographically authorized for a different, unrelated network (5 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

140.233.224.0/19 /19 authorized for AS3320 — Deutsche Telekom AG
195.138.109.0/24 /24 authorized for AS7018 — AT&T Enterprises, LLC
195.138.110.0/24 /24 authorized for AS7018 — AT&T Enterprises, LLC
195.138.113.0/24 /24 authorized for AS7018 — AT&T Enterprises, LLC
195.138.115.0/24 /24 authorized for AS7018 — AT&T Enterprises, LLC
68.234.42.0/24 /24 authorized for AS64267 — Sprious LLC
74.49.229.0/24 /24 authorized for AS834 — IPXO LLC
74.49.241.0/24 /24 authorized for AS834 — IPXO LLC
74.49.243.0/24 /24 authorized for AS834 — IPXO LLC
74.49.245.0/24 /24 authorized for AS834 — IPXO LLC
74.49.247.0/24 /24 authorized for AS834 — IPXO LLC
140.99.123.0/24 /24 authorized for AS834 — IPXO LLC
140.99.151.0/24 /24 authorized for AS834 — IPXO LLC
205.234.233.0/24 /24 authorized for AS834 — IPXO LLC
209.78.88.0/24 /24 authorized for AS7018 — AT&T Enterprises, LLC
+6 more — see the REST API

NIC Handles

ABOVENET-MNT AS13367 AS14042 AS14303 AS20214 AS21508 AS22258 AS22909 AS3257-IPAM-MNT AS3257-NET-MNT AS33287 AS33489 +65 more