Autonomous System
AS20712 Andrews & Arnold Ltd
ISPActiveUnited KingdomRIPE
AS20712 (AS20712) is an ISP network operated by Andrews & Arnold Ltd in United Kingdom, registered with RIPE. It has 87 IPv4 prefixes with 156,928 addresses and 21 IPv6 prefixes, which makes it the 1,540th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses156,928in 87 prefixes
IPv6 prefixes21≈ 1.0 × 10²⁹ addresses
Size rank#1,540of 82,200 active ASNs
Details
OrganizationAndrews & Arnold Ltd
AS nameAS20712
Websiteaa.net.uk
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactabuseripe@aa.net.uk
Registered2002-08-12
Last updated2026-08-28
IPv4 prefixes
87 prefixes · 156,928 addresses| Network | Addresses | First – last address |
|---|---|---|
| 81.187.0.0/16 | 65,536 | 81.187.0.0 – 81.187.255.255 |
| 81.2.64.0/18 | 16,384 | 81.2.64.0 – 81.2.127.255 |
| 90.155.0.0/18 | 16,384 | 90.155.0.0 – 90.155.63.255 |
| 90.155.64.0/19 | 8,192 | 90.155.64.0 – 90.155.95.255 |
| 217.169.0.0/19 | 8,192 | 217.169.0.0 – 217.169.31.255 |
| 5.172.160.0/20 | 4,096 | 5.172.160.0 – 5.172.175.255 |
| 90.155.96.0/20 | 4,096 | 90.155.96.0 – 90.155.111.255 |
| 178.238.144.0/20 | 4,096 | 178.238.144.0 – 178.238.159.255 |
| 90.155.0.0/22 | 1,024 | 90.155.0.0 – 90.155.3.255 |
| 90.155.4.0/22 | 1,024 | 90.155.4.0 – 90.155.7.255 |
| 94.116.12.0/22 | 1,024 | 94.116.12.0 – 94.116.15.255 |
| 94.116.32.0/22 | 1,024 | 94.116.32.0 – 94.116.35.255 |
| 94.116.152.0/22 | 1,024 | 94.116.152.0 – 94.116.155.255 |
| 94.116.184.0/22 | 1,024 | 94.116.184.0 – 94.116.187.255 |
| 94.116.196.0/22 | 1,024 | 94.116.196.0 – 94.116.199.255 |
| 94.116.236.0/22 | 1,024 | 94.116.236.0 – 94.116.239.255 |
| 94.194.88.0/22 | 1,024 | 94.194.88.0 – 94.194.91.255 |
| 109.205.152.0/22 | 1,024 | 109.205.152.0 – 109.205.155.255 |
| 188.191.132.0/22 | 1,024 | 188.191.132.0 – 188.191.135.255 |
| 194.4.172.0/22 | 1,024 | 194.4.172.0 – 194.4.175.255 |
| 81.187.30.0/23 | 512 | 81.187.30.0 – 81.187.31.255 |
| 185.6.132.0/23 | 512 | 185.6.132.0 – 185.6.133.255 |
| 44.30.117.0/24 | 256 | 44.30.117.0 – 44.30.117.255 |
| 44.31.91.0/24 | 256 | 44.31.91.0 – 44.31.91.255 |
| 44.31.166.0/24 | 256 | 44.31.166.0 – 44.31.166.255 |
81.187.0.0/16 81.2.64.0/18 90.155.0.0/18 90.155.64.0/19 217.169.0.0/19 5.172.160.0/20 90.155.96.0/20 178.238.144.0/20 90.155.0.0/22 90.155.4.0/22 94.116.12.0/22 94.116.32.0/22 94.116.152.0/22 94.116.184.0/22 94.116.196.0/22 94.116.236.0/22 94.194.88.0/22 109.205.152.0/22 188.191.132.0/22 194.4.172.0/22 81.187.30.0/23 185.6.132.0/23 44.30.117.0/24 44.31.91.0/24 44.31.166.0/24
The 25 largest of 87. The API and the database have all of them.
IPv6 prefixes
21 prefixes- 2001:8b0::/32
- 2001:8b0::/34
- 2001:8b0:4000::/36
- 2001:678:3c4::/48
- 2001:678:c40::/48
- 2001:67c:2bc::/48
- 2001:67c:1270::/48
- 2001:67c:2058::/48
- 2001:67c:2a40::/48
- 2001:67c:2a4c::/48
- 2001:67c:2e80::/48
- 2001:8b0::/48
- 2001:8b0:1::/48
- 2001:8b0:1628::/48
- 2001:8b6:1::/48
- 2001:8b6:2::/48
- 2001:8b6:3::/48
- 2a00:8e00:1::/48
- 2a03:3a40:2000::/48
- 2a05:6346:200::/48
- 2a11:f2c0:ffc9::/48
2001:8b0::/32 2001:8b0::/34 2001:8b0:4000::/36 2001:678:3c4::/48 2001:678:c40::/48 2001:67c:2bc::/48 2001:67c:1270::/48 2001:67c:2058::/48 2001:67c:2a40::/48 2001:67c:2a4c::/48 2001:67c:2e80::/48 2001:8b0::/48 2001:8b0:1::/48 2001:8b0:1628::/48 2001:8b6:1::/48 2001:8b6:2::/48 2001:8b6:3::/48 2a00:8e00:1::/48 2a03:3a40:2000::/48 2a05:6346:200::/48 2a11:f2c0:ffc9::/48
Query AS20712 with the API
The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day.
curl "https://api.ipapi.is/?q=AS20712&key=YOUR_API_KEY"Any address in its prefixes resolves to AS20712, with or without a key:
curl "https://api.ipapi.is/?q=81.187.0.1"