87.81.112.0/20 - BT UK British Telecommunications Limited (AS2856)
CIDR
87.81.112.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPE
Status
assigned
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 87.81.112.0/20 | AS2856 BT-UK-AS British Telecommunications Limited | Valid | Other IRRRIPE | 2026-10-11 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 87.81.112.0/20 | AS2856 | /20 | ripe |
Transfer History
Registry transfers of 87.81.112.0/20, blocks inside it, or blocks containing it.
- 87.80.0.0/15Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 87.80.0.0/15 | Easynet Global Services Limited | British Sky Broadcasting Limited | Transfer |
Related Prefixes
Geolocation
Country🇬🇧United KingdomGB
CityLondon
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 transfer marketTransfers published by all five RIRs
API
Open https://api.ipctl.io/v1/prefix/87.81.112.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/87.81.112.0/20" | jq
External Links