81.27.64.0/20 - BGP Prefix
IPv4not announcedNo ROA
CIDR
81.27.64.0/20
IP Version
IPv4
Addresses
4K
Mask
/20 (255.255.240.0)
Country
🇬🇧 United Kingdom
City
Croydon
Status
not announced
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
13 more-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.27.64.0/24 | AS25577 C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | - | 2026-10-11 |
| 81.27.66.0/23 | AS25577 C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | - | 2026-10-11 |
| 81.27.68.0/24 | AS5405 INTERDOTLINK Inter.link GmbH | Valid | - | 2026-10-11 |
| 81.27.69.0/24 | AS5405 INTERDOTLINK Inter.link GmbH | Valid | - | 2026-10-11 |
| 81.27.70.0/24 | AS43902 SysEleven-AS43902 SysEleven GmbH | Valid | - | 2026-10-11 |
| 81.27.70.0/24 | AS47865 INTERLINK-RESEARCH Inter.link GmbH | Valid | - | 2026-10-11 |
| 81.27.72.0/23 | AS25577 C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | - | 2026-10-11 |
| 81.27.74.0/24 | AS31034 ARUBA-ASN Aruba S.p.A. | Valid | - | 2026-10-11 |
| 81.27.75.0/24 | AS25577 C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | - | 2026-10-11 |
| 81.27.76.0/24 | AS25577 C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | - | 2026-10-11 |
| 81.27.77.0/24 | AS214503 QUXLABS QuxLabs AB | Valid | - | 2026-10-11 |
| 81.27.78.0/24 | AS214107 eksim Eksim Yatirim Holding AS | Valid | - | 2026-10-11 |
| 81.27.79.0/24 | AS214107 eksim Eksim Yatirim Holding AS | Valid | - | 2026-10-11 |
More Specific Prefixes
Transfer History
Registry transfers of 81.27.64.0/20, blocks inside it, or blocks containing it.
- 81.27.76.0/24Transfer ·
- 81.27.75.0/24Transfer ·
- 81.27.72.0/23Transfer ·
- 81.27.66.0/23Transfer ·
- 81.27.64.0/24Transfer ·
- 81.27.65.0/24Transfer ·
- 81.27.68.0/22Transfer ·
- 81.27.77.0/24Transfer ·
- 81.27.78.0/23Transfer ·
- 81.27.74.0/24Transfer ·
| Date | Resource | From | To | Type |
|---|---|---|---|---|
| 81.27.76.0/24 | Transfer | |||
| 81.27.75.0/24 | Transfer | |||
| 81.27.72.0/23 | Transfer | |||
| 81.27.66.0/23 | Transfer | |||
| 81.27.64.0/24 | Transfer | |||
| 81.27.65.0/24 | Transfer | |||
| 81.27.68.0/22 | Transfer | |||
| 81.27.77.0/24 | Transfer | |||
| 81.27.78.0/23 | Transfer | |||
| 81.27.74.0/24 | Transfer |
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 transfer marketTransfers published by all five RIRs
API
Open https://api.ipctl.io/v1/prefix/81.27.64.0/20Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.27.64.0/20" | jq
External Links