81.27.88.0/21
🇬🇧CIDR
81.27.88.0/21
IP Version
IPv4
Addresses
2K
Mask
/21 (255.255.248.0)
Country
🇬🇧 United Kingdom
City
London
RIR
APNIC
Status
announced
Allocated
-
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.27.88.0/21 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
Covering Prefix
5 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.27.88.0/22 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
| 81.27.92.0/23 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
| 81.27.92.0/24 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
| 81.27.94.0/24 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
| 81.27.95.0/24 | AS25577C4L-AS MAINFRAME & CYBERNETIC SYSTEMS LIMITED | No ROA | — | 6/1/2026 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 81.27.88.0/22 | AS25577 | 🇬🇧GB | allocated |
| 81.27.94.0/23 | 🇬🇧GB | allocated | |
| 81.27.93.0/24 | AS202841 | 🇹🇷TR | allocated |
| 81.27.92.0/24 | AS25577 | 🇬🇧GB | allocated |
| 81.27.92.64/26 | 🇬🇧GB | assigned | |
| 81.27.89.224/27 | 🇬🇧GB | assigned | |
| 81.27.89.128/27 | 🇬🇧GB | assigned | |
| 81.27.95.112/28 | 🇬🇧GB | assigned | |
| 81.27.89.48/28 | 🇬🇧GB | assigned | |
| 81.27.89.160/28 | 🇬🇧GB | assigned | |
| 81.27.89.192/28 | 🇬🇧GB | assigned | |
| 81.27.92.32/28 | 🇬🇧GB | assigned | |
| 81.27.93.80/28 | 🇬🇧GB | assigned | |
| 81.27.93.128/28 | 🇬🇧GB | assigned | |
| 81.27.93.176/28 | 🇬🇧GB | assigned | |
| 81.27.95.16/28 | 🇬🇧GB | assigned | |
| 81.27.95.64/28 | 🇬🇧GB | assigned | |
| 81.27.95.80/28 | 🇬🇧GB | assigned | |
| 81.27.93.104/29 | 🇬🇧GB | assigned | |
| 81.27.93.144/29 | 🇬🇧GB | assigned | |
| 81.27.93.152/29 | 🇬🇧GB | assigned | |
| 81.27.90.56/29 | 🇬🇧GB | assigned | |
| 81.27.91.32/29 | 🇬🇧GB | assigned | |
| 81.27.93.96/29 | 🇬🇧GB | assigned | |
| 81.27.95.104/29 | 🇬🇧GB | assigned | |
| 81.27.95.0/29 | 🇬🇧GB | assigned | |
| 81.27.92.56/29 | 🇬🇧GB | assigned | |
| 81.27.93.64/29 | 🇬🇧GB | assigned | |
| 81.27.93.72/29 | 🇬🇧GB | assigned | |
| 81.27.95.96/29 | 🇬🇧GB | assigned | |
| 81.27.94.128/30 | 🇬🇧GB | assigned | |
| 81.27.94.132/30 | 🇬🇧GB | assigned |
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/81.27.88.0/21Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.27.88.0/21" | jq
External Links