Autonomous System
AS786 Jisc Services Limited
ISPActiveUnited KingdomRIPE
AS786 (JANET) is an ISP network operated by Jisc Services Limited in United Kingdom, registered with RIPE. It has 208 IPv4 prefixes with 6,970,880 addresses and 7 IPv6 prefixes, which makes it the 100th largest of 82,283 active autonomous systems by IPv4 space.
IPv4 addresses6,970,880in 208 prefixes
IPv6 prefixes7≈ 2.1 × 10³⁰ addresses
Size rank#100of 82,283 active ASNs
Details
OrganizationJisc Services Limited
AS nameJANET
Websitejisc.ac.uk
Country United Kingdom (GB)
Network typeISP
RegistryRIPE
Abuse contactirt@jisc.ac.uk
Registered2002-09-18
Last updated2026-10-12
IPv4 prefixes
208 prefixes · 6,970,880 addresses| Network | Addresses | First – last address |
|---|---|---|
| 193.60.0.0/14 | 262,144 | 193.60.0.0 – 193.63.255.255 |
| 194.80.0.0/14 | 262,144 | 194.80.0.0 – 194.83.255.255 |
| 138.250.0.0/15 | 131,072 | 138.250.0.0 – 138.251.255.255 |
| 143.52.0.0/15 | 131,072 | 143.52.0.0 – 143.53.255.255 |
| 195.194.0.0/15 | 131,072 | 195.194.0.0 – 195.195.255.255 |
| 81.87.0.0/16 | 65,536 | 81.87.0.0 – 81.87.255.255 |
| 128.16.0.0/16 | 65,536 | 128.16.0.0 – 128.16.255.255 |
| 128.40.0.0/16 | 65,536 | 128.40.0.0 – 128.40.255.255 |
| 128.232.0.0/16 | 65,536 | 128.232.0.0 – 128.232.255.255 |
| 128.240.0.0/16 | 65,536 | 128.240.0.0 – 128.240.255.255 |
| 128.243.0.0/16 | 65,536 | 128.243.0.0 – 128.243.255.255 |
| 129.11.0.0/16 | 65,536 | 129.11.0.0 – 129.11.255.255 |
| 129.12.0.0/16 | 65,536 | 129.12.0.0 – 129.12.255.255 |
| 129.31.0.0/16 | 65,536 | 129.31.0.0 – 129.31.255.255 |
| 129.67.0.0/16 | 65,536 | 129.67.0.0 – 129.67.255.255 |
| 129.169.0.0/16 | 65,536 | 129.169.0.0 – 129.169.255.255 |
| 129.215.0.0/16 | 65,536 | 129.215.0.0 – 129.215.255.255 |
| 129.234.0.0/16 | 65,536 | 129.234.0.0 – 129.234.255.255 |
| 130.88.0.0/16 | 65,536 | 130.88.0.0 – 130.88.255.255 |
| 130.159.0.0/16 | 65,536 | 130.159.0.0 – 130.159.255.255 |
| 130.209.0.0/16 | 65,536 | 130.209.0.0 – 130.209.255.255 |
| 130.246.0.0/16 | 65,536 | 130.246.0.0 – 130.246.255.255 |
| 131.111.0.0/16 | 65,536 | 131.111.0.0 – 131.111.255.255 |
| 131.227.0.0/16 | 65,536 | 131.227.0.0 – 131.227.255.255 |
| 131.231.0.0/16 | 65,536 | 131.231.0.0 – 131.231.255.255 |
193.60.0.0/14 194.80.0.0/14 138.250.0.0/15 143.52.0.0/15 195.194.0.0/15 81.87.0.0/16 128.16.0.0/16 128.40.0.0/16 128.232.0.0/16 128.240.0.0/16 128.243.0.0/16 129.11.0.0/16 129.12.0.0/16 129.31.0.0/16 129.67.0.0/16 129.169.0.0/16 129.215.0.0/16 129.234.0.0/16 130.88.0.0/16 130.159.0.0/16 130.209.0.0/16 130.246.0.0/16 131.111.0.0/16 131.227.0.0/16 131.231.0.0/16
The 25 largest of 208. The API and the database have all of them.
IPv6 prefixes
7 prefixes- 2a03:aba0::/29
- 2a0a:200::/29
- 2a0c:5bc0::/29
- 2001:630::/32
- 2a05:b400::/32
- 2001:678:718::/48
- 2a09:9180:fd::/48
2a03:aba0::/29 2a0a:200::/29 2a0c:5bc0::/29 2001:630::/32 2a05:b400::/32 2001:678:718::/48 2a09:9180:fd::/48
Query AS786 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=AS786&key=YOUR_API_KEY"
Any address in its prefixes resolves to AS786, with or without a key:
curl "https://api.ipapi.is/?q=193.60.0.1"
Largest networks in United Kingdom
AS285618,462,464 IPv4 addressesAS5089 Virgin Media Limited17,977,856 IPv4 addressesAS5607 Sky UK Limited6,352,128 IPv4 addressesAS13285 TalkTalk Communications Limited3,956,736 IPv4 addressesAS5378 Vodafone Limited2,793,216 IPv4 addressesAS6871 British Telecommunications Limited2,130,944 IPv4 addresses