AS33653 CMCS - Comcast Cable Communications, LLC

🇺🇸

ARINassigned

Announced Prefixes (BGP)

50total

44 IPv46 IPv6

IPv4 Addresses

Allocated (RIR)0

Announced (BGP)146,944

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)1×10³¹

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

RIR

Status

assigned

Allocated

2005-02-16

Announced Prefixes

(BGP)50

Prefix	RPKI	IRR	Last Seen
24.11.144.0/20	Valid	ARIN	2026-10-11
50.188.130.0/23	Valid	ARIN	2026-10-11
50.197.226.0/23	Valid	-	2026-10-11
50.208.236.0/24	Valid	ARIN	2026-10-11
50.208.238.0/23	Valid	ARIN	2026-10-11
50.248.112.0/23	Valid	ARIN	2026-10-11
50.252.182.0/23	Valid	ARIN	2026-10-11
64.139.76.0/24	Valid	ARIN	2026-10-11
64.139.88.0/23	Valid	ARIN	2026-10-11
66.208.204.0/23	Valid	ARIN	2026-10-11

1-10 of 50

1 / 5

(seen in AS paths)

Networks AS33653 hands its own prefixes to: transit providers, or peers at an exchange.

Registry transfers of AS33653 between organisations.

Date	Resource	From	To	Type
2016-08-31	AS33653	Comcast Cable Communications, Inc. 🇺🇸 US ARIN	Comcast Cable Communications, LLC 🇺🇸 US ARIN	M&A

ASPA

No ASPA

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS33653 should publish an ASPA object
IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/33653" | jq