89.39.172.0/23 - BT UK British Telecommunications Limited (AS2856)
CIDR
89.39.172.0/23
IP Version
IPv4
Addresses
512
Mask
/23 (255.255.254.0)
Country
🇬🇧 United Kingdom
City
London (Colindale)
RIR
RIPE NCC
Status
allocated
Allocated
2005-11-29
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 89.39.172.0/23 | AS2856 BT-UK-AS British Telecommunications Limited | Valid | RIPE | 2026-10-12 |
RPKI ROAs
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS2856 | RIPE | lir-us-lunarnaut-1-MNT | 2025-08-28 |
Transfer History
Registry transfers of 89.39.172.0/23, blocks inside it, or blocks containing it.
- 89.39.172.0/23Transfer ·
- 89.39.172.0/23Transfer ·
Related Prefixes
Geolocation
Abuse Contact
Learn more
- RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
- RPKI validatorCheck ROA coverage for any prefix or ASN
- What is BGP?How prefixes are announced and routed
- More-specific prefixesGlossary: covering and more-specific routes
- IPv4 transfers in the RIPE NCC regionWho bought and sold address space recently
API
Open https://api.ipctl.io/v1/prefix/89.39.172.0/23Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/89.39.172.0/23" | jq
External Links