91.123.0.0/21 - BGP Prefix
IPv4RIPEassigned RPKI Valid
CIDR
91.123.0.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPE
Status
assigned
Allocated
-
Announced BGP Routes
0 of 0 routesRPKI:
IRR:
Swipe sideways to see all columns →
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below. | ||||
More-Specific Announcements
8 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 91.123.0.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.1.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.2.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.3.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.4.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.5.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.6.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
| 91.123.7.0/24 | AS9009 M247 M247 Europe SRL | Valid | - | 2026-10-12 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 91.123.0.0/22 | 🇬🇧GB | assigned | |
| 91.123.4.0/22 | 🇬🇧GB | assigned |
Transfer History
Registry transfers of 91.123.0.0/21, blocks inside it, or blocks containing it.
- 91.123.0.0/20Transfer ·
- 91.123.0.0/20Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 91.123.0.0/20 | Transfer | |||
| 91.123.0.0/20 | TENNET TELECOM SRL | Roberscheuten B.V. | Transfer |
Geolocation
Country🇬🇧United KingdomGB
CityLondon
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/91.123.0.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/91.123.0.0/21" | jq
External Links