AS33490 COMCAST-33490 - Comcast Cable Communications, LLC
🇺🇸ARINassigned
Announced Prefixes (BGP)
205total
135 IPv470 IPv6
IPv4 Addresses
Allocated (RIR)5,120
Announced (BGP)856,320
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)1×10³¹
Routing hygiene
Score 56/100 · High riskRPKI ROA coverage
86.3%
14 prefixes RPKI invalid
IRR route objects
31.4%
136 prefixes registered for another origin
Hijack signals
14
14 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
- Announces 14 prefixes that RPKI assigns to another network (possible hijack or misconfiguration)
- 69% of announced prefixes (140 of 204) have no IRR route object for this ASN
- Only one upstream seen in the AS paths of its routes
- 14% of announced prefixes (28 of 204) have no valid ROA, 14 of them RPKI invalid
- 5 prefixes registered in IRR route objects for another active network and not authorized by a ROA
Based on 204 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained
Announced Prefixes
(BGP)205|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - | |
| Valid | ARIN | - | |
| Valid | - | - | |
| Valid | - | - | |
| Valid | - | - |
1-10 of 205
1 / 21
Allocated Prefixes
(RIR)5Prefix | Country | RIR | Status |
|---|---|---|---|
| 72.19.22.0/24 | 🇺🇸 US | ARIN | allocated |
| 104.145.48.0/20 | 🇺🇸 US | ARIN | allocated |
| 192.83.221.0/24 | 🇺🇸 US | ARIN | allocated |
| 199.244.171.0/24 | 🇺🇸 US | ARIN | allocated |
| 199.244.172.0/24 | 🇺🇸 US | ARIN | allocated |
All 205 announced prefixes of AS33490 →
Downstream Customers(1)
| ASN | Name |
|---|---|
| AS395141 | 🇺🇸PRMHQ-AS1 - Primisys Computer Systems & Support, LLC |
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS33490 hands its own prefixes to: transit providers, or peers at an exchange.
- AS7922Comcast Cable Communications204
Downstreams (32)
Networks whose own prefixes AS33490 passes on: usually its customers.
- AS393408University Of Portland8
- AS11995Oregon Health & Science University5
- AS13541Siemens Industry Software4
- AS31128SHAZAM Apple Distribution International4
- AS1823Hannah Motor Company2
- AS11396Williams Information Technology2
- AS13888Bear Creek Operations2
- AS36564Siemens Industry Software2
- AS36612Clark County WA2
- AS53752US Digital2
- AS398838Straub Collaborative2
- AS399209Acumed2
- AS400517Linespeed2
- AS7406B&R Auto1
- AS7441Omega Datacenters1
- AS11746Waggener Edstrom Worldwide1
- AS15045KITTELSON AND ASSOCIATES1
- AS18661Dunn Carney Allen Higgins & Tongue, LLP1
- AS21718Northwest Natural Gas1
- AS23182THE GREENBRIER COMPANIES1
- AS23431Adventist1
- AS25652InRoads Federal Credit Union1
- AS26450CTDI1
- AS29921State Accident Insurance Fund Corporation1
- AS36040Google1
- AS40227IP Networked Services1
- AS53531Seneca Sawmill Company1
- AS62977The Pape Group1
- AS394132Cascade Microtech1
- AS395270-1
- AS396115Ilani Resort1
- AS399540AbSci Corporation1
Other adjacent networks (1)
Adjacent to AS33490 in the transit part of AS paths: peers, providers or customers.
- AS3356Level 3 Parent2
External Links
Learn more
- 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
- How to run an ASPA checkVerify the upstream providers listed above
- IPv4 transfers in the ARIN regionMonthly volume and the latest registry transfers
- ASN data in AI agents and SIEMMCP server and API integrations
API
Open https://api.ipctl.io/v1/asn/33490Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/33490" | jq