AS4901 CAAREN - The George Washington University
🇺🇸ARINassignedASPA Published
Announced Prefixes (BGP)
2total
1 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)1,024
Announced (BGP)1,024
IPv6 Addresses
Allocated (RIR)1.9×10²⁵
Announced (BGP)1.9×10²⁵
Routing hygiene
Score 10/100 · Low riskRPKI ROA coverage
100%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
- Only one upstream seen in the AS paths of its routes
Based on 2 announced prefixes, updated daily (2026-10-25). How the score works · RPKI explained
Announced Prefixes
(BGP)2|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | ARIN | 2026-10-25 | |
| Valid | ARIN | 2026-10-25 |
Allocated Prefixes
(RIR)2Prefix | Country | RIR | Status |
|---|---|---|---|
| 162.250.136.0/22 | 🇺🇸 US | ARIN | allocated |
| 2620:118:5000::/44 | 🇺🇸 US | ARIN | allocated |
All 2 announced prefixes of AS4901 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS4901 hands its own prefixes to: transit providers, or peers at an exchange.
- AS6079RCN2
Downstreams (4)
Networks whose own prefixes AS4901 passes on: usually its customers.
Other adjacent networks (1)
Adjacent to AS4901 in the transit part of AS paths: peers, providers or customers.
- AS11537Internet24
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/4901Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/4901" | jq