206208 looking glass

AS33668 Comcast Cable Communications, LLC 🇺🇸 US

Announcing 95 prefixes, seen at the RIS collectors.

IPv4 prefixes
26
6,656 (26 × /24)
IPv6 prefixes
69
69 × /48
Upstreams
2
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
62
transit customers observed
Customer cone
18,598
ASes reachable through it

Registry and operator data

AS number
AS33668
Name
Comcast Cable Communications, LLC
Organisation
Comcast - Michigan/Detroit
Country
🇺🇸 US
RIR
ARIN
Allocated
2005-02-16
Network type
Cable/DSL/ISP
Scope
Regional
Peering policy
Restrictive
PeeringDB
net/10087
Facilities
1

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

87 valid (91.6%) 0 invalid (0.0%) 8 no ROA (8.4%)

Announcement history

One point per day, recorded at each table import

01735526909-1809-2309-2810-0310-0810-1310-17
IPv4 IPv6

Recorded changes

New prefixes and origin changes seen on the live stream

WhenChangePrefixOriginPath
2026-10-12 06:14:24Z origin change 198.199.172.0/24 AS33668 → AS30600 46087575129930600
2026-10-12 05:56:31Z origin change 198.199.172.0/24 AS33668 → AS30600 46087575129930600
2026-10-12 04:58:27Z origin change 198.199.172.0/24 AS33668 → AS30600 46087575129930600