81.173.16.0/20 - BGP Prefix
IPv4RIPE NCCallocated RPKI Valid
CIDR
81.173.16.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPE NCC
Status
allocated
Allocated
2003-02-19
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
7 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.173.18.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.19.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.20.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.21.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.22.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.23.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
| 81.173.28.0/24 | AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street | Valid | - | 2026-10-13 |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS4134 | Other IRR | MAINT-CT-GNOC | 2023-11-13 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 81.173.16.0/24 | 🇬🇧GB | assigned | |
| 81.173.17.0/24 | 🇬🇧GB | assigned | |
| 81.173.18.0/24 | AS4134 | 🇳🇱NL | assigned |
| 81.173.19.0/24 | AS4134 | 🇳🇱NL | assigned |
| 81.173.20.0/24 | AS4134 | 🇩🇪DE | assigned |
| 81.173.21.0/24 | AS4134 | 🇩🇪DE | assigned |
| 81.173.22.0/24 | AS4134 | 🇩🇪DE | assigned |
| 81.173.23.0/24 | AS4134 | 🇩🇪DE | assigned |
| 81.173.24.0/24 | 🇷🇺RU | assigned | |
| 81.173.26.0/24 | 🇳🇱NL | assigned | |
| 81.173.27.0/24 | 🇳🇱NL | assigned | |
| 81.173.28.0/24 | AS4134 | 🇫🇷FR | assigned |
Geolocation
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/81.173.16.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.173.16.0/20" | jq
External Links