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Autonomous System

AS33650

Comcast Cable Communications, LLC

Announced IPs
3,840
CIDR prefixes
13
ASN
AS33650

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

58/100
Caution
How this score is built
  • Baseline (neutral) 65
  • Multiple-origin (MOAS) routing anomaly −12
  • Isp allocation +5
  • Trust score 58 / 100

Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →

About Xfinity

Comcast Cable Communications, doing business as Xfinity, is an American telecommunications business segment and division of Comcast Corporation. It is used to market consumer cable television, internet, telephone, and wireless services provided by the company.

Founded
1981
Headquarters
Philadelphia
Industry
telecommunications

⚠ 1 MOAS prefix — multiple origin ASNs detected

All MOAS anomalies →

A previously stable prefix originated by AS33650 is now also announced by another ASN (MOAS — Multiple-Origin AS), detected from our RIPE RIS collectors. Often benign (anycast, multi-homing, or a recent transfer) — but it can signal a route leak or prefix hijack, so it's worth inspecting.

PrefixOrigin ASNsLast detected (UTC)
50.207.166.0/24 AS7406, AS33650 2026-07-18 11:22:44

Network profile

Source: PeeringDB →
Network type Cable/DSL/ISP
Geographic scope Regional
Traffic ratio Not Disclosed
Peering policy Restrictive

Top CIDR ranges

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS33650 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
50.204.37.0/24 11,434 2026-07-18 10:52:03
50.234.46.0/23 8,510 2026-07-18 10:52:03
50.238.166.0/24 7,211 2026-07-18 10:52:03
50.204.214.0/24 6,587 2026-07-18 10:52:03
50.202.174.0/24 6,577 2026-07-18 10:52:03
50.216.238.0/24 6,576 2026-07-18 10:52:03
50.226.76.0/23 6,574 2026-07-18 10:52:03
50.222.54.0/24 6,545 2026-07-18 10:52:03
50.238.235.0/24 6,523 2026-07-18 10:52:03
107.0.168.0/24 6,443 2026-07-18 10:52:03
64.145.72.0/24 5,831 2026-07-18 10:52:03
199.79.96.0/22 5,757 2026-07-18 10:52:32
50.207.166.0/24 5,278 2026-07-18 10:52:03

Frequently Asked Questions

What is AS33650?

AS33650 is an Autonomous System Number assigned to Comcast Cable Communications, LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS33650 announce?

AS33650 announces 3.8K IPv4 addresses distributed across 13 routed CIDR prefixes. The network is registered in United States.

Who operates AS33650?

AS33650 is operated by Comcast Cable Communications, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS33650 registered in?

AS33650 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-18 11:25:31 UTC
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