AS203938 SAMUEL-COSGROVE Samuel Cosgrove
🇬🇧Org handle: ORG-SC1268-RIPE
RIPE NCCallocated
Announced Prefixes (BGP)
7total
7 IPv40 IPv6
IPv4 Addresses
Allocated (RIR)1,536
Announced (BGP)1,792
IPv6 Addresses
Allocated (RIR)0
Announced (BGP)0
Routing hygiene
Score 28/100 · Medium riskRPKI ROA coverage
71.4%
1 prefix RPKI invalid
IRR route objects
71.4%
2 prefixes registered for another origin
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
1
diversity 0/100
- 29% of announced prefixes (2 of 7) have no valid ROA, 1 of them RPKI invalid
- Only one upstream seen in the AS paths of its routes
- 29% of announced prefixes (2 of 7) have no IRR route object for this ASN
Based on 7 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained
Announced Prefixes
(BGP)7|
Prefix | RPKI | IRR | Last Seen |
|---|---|---|---|
| Valid | RIPE | 2026-10-26 | |
136.175.223.0/24MOAS | Valid | RIPE | 2026-10-26 |
| Valid | RIPE | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 | |
| No ROA | - | 2026-10-26 | |
| Invalid | - | 2026-10-26 | |
| Valid | RIPE | 2026-10-26 |
Allocated Prefixes
(RIR)6Prefix | Country | RIR | Status |
|---|---|---|---|
| 136.175.223.0/24 | 🇬🇧 GB | RIPE | assigned |
| 163.123.192.0/24 | 🇬🇧 GB | RIPENCC | allocated |
| 163.123.194.0/24 | 🇬🇧 GB | RIPENCC | allocated |
| 172.111.32.0/24 | 🇬🇧 GB | RIPENCC | allocated |
| 205.178.176.0/24 | 🇬🇧 GB | RIPENCC | allocated |
| 205.220.227.0/24 | 🇬🇧 GB | RIPENCC | allocated |
All 7 announced prefixes of AS203938 →
BGP Neighbours
(seen in AS paths)Upstreams (1)
Networks AS203938 hands its own prefixes to: transit providers, or peers at an exchange.
- AS1299TWELVE99 Arelion Sweden AB7
ASPA
No ASPA
Abuse Contact
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
- ASPA explainedWhy AS203938 should publish an ASPA object
- IPv4 transfers in the RIPE NCC 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/203938Returns ASN details, announced prefixes, and BGP routing data.
curl -s "https://api.ipctl.io/v1/asn/203938" | jq