81.187.0.0/16
🇬🇧CIDR
81.187.0.0/16
IP Version
IPv4
Addresses
65.5K
Mask
/16 (255.255.0.0)
Country
🇬🇧 United Kingdom
City
London
RIR
RIPENCC
Status
allocated
Allocated
2/3/2003
Announced BGP Routes
1 of 1 routeRPKI:
IRR:
| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.187.0.0/16 | AS20712AS20712 Andrews & Arnold Ltd | Valid | RIPE | 5/31/2026 |
Covering Prefix
4 less-specific announcements| Prefix | Origin AS | RPKI | IRR | Last Seen |
|---|---|---|---|---|
| 81.187.96.0/20 | AS41489WF-AS Watchfront Limited | Valid | — | 5/31/2026 |
| 81.187.30.0/23 | AS20712AS20712 Andrews & Arnold Ltd | Valid | — | 5/31/2026 |
| 81.187.42.0/24 | AS41489WF-AS Watchfront Limited | Valid | — | 5/31/2026 |
| 81.187.128.0/24 | AS41489WF-AS Watchfront Limited | Valid | — | 5/31/2026 |
RPKI ROAs
| Prefix | Origin | Max Length | Trust Anchor |
|---|---|---|---|
| 81.187.0.0/16 | AS20712 | /24 | ripe |
IRR Route Objects
| Origin | Registry | Maintainer | Modified |
|---|---|---|---|
| AS20712 | RIPE | AA | 5/26/2015 |
More Specific Prefixes
| Prefix | AS | Country | Status |
|---|---|---|---|
| 81.187.249.0/24 | 🇬🇧GB | assigned | |
| 81.187.161.0/24 | 🇬🇧GB | assigned | |
| 81.187.81.0/24 | 🇬🇧GB | assigned | |
| 81.187.30.0/24 | 🇬🇧GB | assigned | |
| 81.187.128.0/24 | AS41489 | 🇬🇧GB | assigned |
| 81.187.16.128/25 | 🇬🇧GB | assigned | |
| 81.187.78.128/25 | 🇬🇧GB | assigned | |
| 81.187.225.0/25 | 🇬🇧GB | assigned | |
| 81.187.174.128/25 | 🇬🇧GB | assigned | |
| 81.187.138.0/25 | 🇬🇧GB | assigned | |
| 81.187.52.128/25 | 🇬🇧GB | assigned | |
| 81.187.63.0/25 | 🇬🇧GB | assigned | |
| 81.187.255.0/25 | 🇬🇧GB | assigned | |
| 81.187.62.128/25 | 🇬🇧GB | assigned | |
| 81.187.10.0/25 | 🇬🇧GB | assigned | |
| 81.187.60.128/25 | 🇬🇧GB | assigned | |
| 81.187.25.128/25 | 🇬🇧GB | assigned | |
| 81.187.7.0/25 | 🇬🇧GB | assigned | |
| 81.187.246.0/25 | 🇬🇧GB | assigned | |
| 81.187.230.128/25 | 🇬🇧GB | assigned | |
| 81.187.129.0/25 | 🇬🇧GB | assigned | |
| 81.187.199.128/25 | 🇬🇧GB | assigned | |
| 81.187.1.128/25 | 🇬🇧GB | assigned | |
| 81.187.50.128/25 | 🇬🇧GB | assigned | |
| 81.187.31.0/25 | 🇬🇧GB | assigned | |
| 81.187.23.0/25 | 🇬🇧GB | assigned | |
| 81.187.117.128/25 | 🇬🇧GB | assigned | |
| 81.187.222.0/25 | 🇬🇧GB | assigned | |
| 81.187.203.128/25 | 🇬🇧GB | assigned | |
| 81.187.13.128/25 | 🇬🇧GB | assigned | |
| 81.187.175.128/25 | 🇬🇧GB | assigned | |
| 81.187.157.0/25 | 🇬🇧GB | assigned | |
| 81.187.56.0/25 | 🇬🇧GB | assigned | |
| 81.187.89.128/25 | 🇬🇧GB | assigned | |
| 81.187.124.0/26 | 🇬🇧GB | assigned | |
| 81.187.231.128/26 | 🇬🇧GB | assigned | |
| 81.187.189.0/26 | 🇬🇧GB | assigned | |
| 81.187.146.64/26 | 🇬🇧GB | assigned | |
| 81.187.154.128/26 | 🇬🇧GB | assigned | |
| 81.187.61.128/26 | 🇬🇧GB | assigned | |
| 81.187.51.128/26 | 🇬🇧GB | assigned | |
| 81.187.59.192/26 | 🇬🇧GB | assigned | |
| 81.187.29.0/26 | 🇬🇧GB | assigned | |
| 81.187.151.192/26 | 🇬🇧GB | assigned | |
| 81.187.215.128/26 | 🇬🇧GB | assigned | |
| 81.187.142.64/26 | 🇬🇧GB | assigned | |
| 81.187.155.0/26 | 🇬🇧GB | assigned | |
| 81.187.135.0/26 | 🇬🇧GB | assigned | |
| 81.187.113.64/26 | 🇬🇧GB | assigned | |
| 81.187.120.128/26 | 🇬🇧GB | assigned | |
| 81.187.140.192/26 | 🇬🇧GB | assigned | |
| 81.187.86.192/26 | 🇬🇧GB | assigned | |
| 81.187.195.192/26 | 🇬🇧GB | assigned | |
| 81.187.92.64/26 | 🇬🇧GB | assigned | |
| 81.187.251.192/26 | 🇬🇧GB | assigned | |
| 81.187.34.192/26 | 🇬🇧GB | assigned | |
| 81.187.131.64/26 | 🇬🇧GB | assigned | |
| 81.187.141.128/26 | 🇬🇧GB | assigned | |
| 81.187.123.64/26 | 🇬🇧GB | assigned | |
| 81.187.85.0/26 | 🇬🇧GB | assigned | |
| 81.187.92.128/26 | 🇬🇧GB | assigned | |
| 81.187.113.128/26 | 🇬🇧GB | assigned | |
| 81.187.61.0/26 | 🇬🇧GB | assigned | |
| 81.187.69.0/26 | 🇬🇧GB | assigned | |
| 81.187.42.64/26 | 🇬🇧GB | assigned | |
| 81.187.22.192/26 | 🇬🇧GB | assigned | |
| 81.187.50.64/26 | 🇬🇧GB | assigned | |
| 81.187.70.192/26 | 🇬🇧GB | assigned | |
| 81.187.180.128/26 | 🇬🇧GB | assigned | |
| 81.187.157.192/26 | 🇬🇧GB | assigned | |
| 81.187.4.0/26 | 🇬🇧GB | assigned | |
| 81.187.15.128/26 | 🇬🇧GB | assigned | |
| 81.187.31.128/26 | 🇬🇧GB | assigned | |
| 81.187.36.192/26 | 🇬🇧GB | assigned | |
| 81.187.223.128/26 | 🇬🇧GB | assigned | |
| 81.187.3.64/26 | 🇬🇧GB | assigned | |
| 81.187.153.128/26 | 🇬🇧GB | assigned | |
| 81.187.122.64/26 | 🇬🇧GB | assigned | |
| 81.187.156.64/26 | 🇬🇧GB | assigned | |
| 81.187.29.64/26 | 🇬🇧GB | assigned | |
| 81.187.118.128/26 | 🇬🇧GB | assigned | |
| 81.187.113.0/26 | 🇬🇧GB | assigned | |
| 81.187.126.128/26 | 🇬🇧GB | assigned | |
| 81.187.145.128/26 | 🇬🇧GB | assigned | |
| 81.187.191.0/26 | 🇬🇧GB | assigned | |
| 81.187.149.64/26 | 🇬🇧GB | assigned | |
| 81.187.229.0/26 | 🇬🇧GB | assigned | |
| 81.187.118.0/26 | 🇬🇧GB | assigned | |
| 81.187.130.0/26 | 🇬🇧GB | assigned | |
| 81.187.132.64/26 | 🇬🇧GB | assigned | |
| 81.187.88.192/26 | 🇬🇧GB | assigned | |
| 81.187.145.192/26 | 🇬🇧GB | assigned | |
| 81.187.162.192/26 | 🇬🇧GB | assigned | |
| 81.187.165.0/26 | 🇬🇧GB | assigned | |
| 81.187.85.128/26 | 🇬🇧GB | assigned | |
| 81.187.109.192/26 | 🇬🇧GB | assigned | |
| 81.187.63.192/26 | 🇬🇧GB | assigned | |
| 81.187.14.0/26 | 🇬🇧GB | assigned | |
| 81.187.76.64/26 | 🇬🇧GB | assigned | |
| 81.187.116.0/26 | 🇬🇧GB | assigned |
Origin ASN
AS20712
AS20712 Andrews & Arnold Ltd
Geolocation
Abuse Contact
API
Open https://api.ipctl.io/v1/prefix/81.187.0.0/16Returns prefix allocation, BGP routes, and more-specific subnets.
curl -s "https://api.ipctl.io/v1/prefix/81.187.0.0/16" | jq
External Links