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AS numbers

AS33660 Comcast - Utah

AS33660 is operated by Comcast - Utah and registered with ARIN (US) since 2005-02-16.

It announces 8 IPv4 and 49 IPv6 prefixes, 94% of them RPKI valid.

RIPE RIS sees 2 upstream and peer networks and 65 downstream networks next to it.

PeeringDB lists it as a Cable/DSL/ISP network at 1 facility. Its peering policy is restrictive.

Run the full network report BGP lookup WHOIS PeeringDB lookup
NameComcast - Utah
Registry handleCMCS
Registry (RIR)ARIN
CountryUnited States (US)
Delegated on2005-02-16
Network typeCable/DSL/ISP, Regional
Peering policyRestrictive
Prefixes (IPv4 / IPv6)8 / 49
RPKI valid94% (54 / 57)
Upstreams and peers2
Downstream networks65

Routing health

  • AS33660 announces 8 IPv4 and 49 IPv6 prefixes.
  • 54 of 57 announced prefixes are RPKI valid.
  • 3 announced prefixes are not covered by a ROA of AS33660 (they may have none, or another network’s).
  • 2 upstreams and peers, 65 downstream networks seen.

For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.

Announced prefixes 57

  • 50.204.89.0/24
  • 50.207.68.0/24
  • 50.222.146.0/24
  • 50.222.157.0/24
  • 50.224.25.0/24
  • 129.134.166.0/24
  • 129.134.167.0/24
  • 192.16.177.0/24
  • 2a03:2887:ff46::/48
  • 2a03:2887:ff47::/48
  • 2001:559:2de::/48
  • 2001:559:2e4::/48
  • 2001:559:3b2::/48
  • 2001:559:3b3::/48
  • 2001:559:3c4::/48
  • 2001:559:4a7::/48
  • 2001:559:4a9::/48
  • 2001:559:5d8::/48
  • 2001:559:20a::/48
  • 2001:559:26c::/48
  • 2001:559:29::/48
  • 2001:559:31a::/48
  • 2001:559:37f::/48
  • 2001:559:41a::/48
  • 2001:559:57f::/48
  • 2001:559:58c::/48
  • 2001:559:82d4::/48
  • 2001:559:82e8::/48
  • 2001:559:83a6::/48
  • 2001:559:85e0::/48
  • 2001:559:86b6::/48
  • 2001:559:521::/48
  • 2001:559:808a::/48
  • 2001:559:819d::/48
  • 2001:559:831b::/48
  • 2001:559:8092::/48
  • 2001:559:8137::/48
  • 2001:559:8329::/48
  • 2001:559:8443::/48
  • 2001:559:8450::/48
  • 2001:559:8460::/48
  • 2001:559:8484::/48
  • 2001:559:8485::/48
  • 2001:559:8782::/48
  • 2001:559:c0ef::/48
  • 2001:559:c2e6::/48
  • 2001:559:c3f5::/48
  • 2001:559:c16d::/48
  • 2001:559:c54c::/48
  • 2001:559:c154::/48
  • 2001:559:c171::/48
  • 2001:559:c173::/48
  • 2001:559:c285::/48
  • 2001:559:c348::/48
  • 2001:559:c493::/48
  • 2001:559:fa::/48
  • 2001:559:fb::/48

Upstreams and peers 2

The networks RIPE RIS sees next to AS33660 in BGP paths, the most visible first.

Peering

Peering policy: Restrictive. Suggested max-prefix limits: 0 IPv4, 0 IPv6. PeeringDB record

Facilities 1
FacilityCityCountry
EdgeConneX Salt Lake City (EDCSLC01)Salt Lake CityUS

More about AS33660

Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-14 01:35 UTC. The country is where the AS number was registered, not necessarily where the network operates.