| RPMS | ||||
| 146.179.0.0 — 146.179.255.255 | United Kingdom | 146.179.0.0/16 | 65536 | |
| ICDOCNET | ||||
| 146.169.0.0 — 146.169.255.255 | United Kingdom | 146.169.0.0/16 | 65536 | |
| ICNET | ||||
| 129.31.0.0 — 129.31.255.255 | United Kingdom | 129.31.0.0/16 | 65536 | |
| ICFDDI-NET | ||||
| 155.198.0.0 — 155.198.255.255 | United Kingdom | 155.198.0.0/16 | 65536 | |
| UK-IC-20180413 | ||||
| 185.255.108.0 — 185.255.111.255 | United Kingdom | 185.255.108.0/22 | 1024 | |
| 2a0c:5bc0:: — 2a0c:5bc7:ffff:ffff:ffff:ffff:ffff:ffff | United Kingdom | 2a0c:5bc0::/29 | 299 | |
| WYE-NET2 | ||||
| 192.195.116.0 — 192.195.118.255 | United Kingdom | 192.195.116.0/23, 192.195.118.0/24 | 768 | |
| ICSTM | ||||
| 194.82.152.0 — 194.82.154.255 | Imperial College of Science, Technology and Medicine Core network infrastructure Was CXWMS which became part of Imperial College in 1997 | United Kingdom | 194.82.152.0/23, 194.82.154.0/24 | 768 |
| 193.63.75.0 — 193.63.75.255 | Imperial College of Science, Technology and Medicine | United Kingdom | 193.63.75.0/24 | 256 |
| 194.81.217.0 — 194.81.217.255 | Imperial College of Science, Technology and Medicine | United Kingdom | 194.81.217.0/24 | 256 |
| 193.61.68.0 — 193.61.68.255 | Imperial College of Science, Technology and Medicine Misc Network Infrastructure | United Kingdom | 193.61.68.0/24 | 256 |
| 193.63.111.0 — 193.63.111.255 | Imperial College of Science, Technology and Medicine Network Infrastructure | United Kingdom | 193.63.111.0/24 | 256 |
| 194.81.220.0 — 194.81.220.255 | Imperial College of Science, Technology and Medicine | United Kingdom | 194.81.220.0/24 | 256 |
| 194.81.219.0 — 194.81.219.255 | Imperial College of Science, Technology and Medicine | United Kingdom | 194.81.219.0/24 | 256 |
| 194.81.211.0 — 194.81.211.255 | Imperial College of Science, Technology and Medicine | United Kingdom | 194.81.211.0/24 | 256 |
| 2001:630:12:: — 2001:630:12:ffff:ffff:ffff:ffff:ffff | Imperial College of Science, Technology and Medicine | United Kingdom | 2001:630:12::/48 | 280 |
| CXWNET | ||||
| 192.195.105.0 — 192.195.105.255 | United Kingdom | 192.195.105.0/24 | 256 | |
| WYE-NET | ||||
| 192.149.111.0 — 192.149.111.255 | United Kingdom | 192.149.111.0/24 | 256 | |
| ICSILWOOD | ||||
| 192.156.162.0 — 192.156.162.255 | United Kingdom | 192.156.162.0/24 | 256 | |
| ICDOCNET2 | ||||
| 193.61.70.0 — 193.61.70.255 | Imperial College of Science, Technology and Medicine Misc Network Infrastructure | United Kingdom | 193.61.70.0/24 | 256 |
