| UK-SILICONS-990204 | ||||
| 212.89.64.0 — 212.89.95.255 | United Kingdom | 212.89.64.0/19 | 8192 | |
| UK-SILICONS-20180720 | ||||
| 194.4.64.0 — 194.4.67.255 | United Kingdom | 194.4.64.0/22 | 1024 | |
| Arrowhead-MCR2 | ||||
| 212.89.83.0 — 212.89.83.255 | Arrowhead Systems Ltd IFL2, Manchester | United Kingdom | 212.89.83.0/24 | 256 |
| Arrowhead-MCR1 | ||||
| 212.89.82.0 — 212.89.82.255 | Arrowhead Systems Ltd IFL2, Manchester | United Kingdom | 212.89.82.0/24 | 256 |
| UK-ECLIPSE-T2CKY80UXXS8Y86J | ||||
| 82.152.11.160 — 82.152.11.167 | Arrowhead Systems Ltd | United Kingdom | 82.152.11.160/29 | 8 |
| UK-SILICONS-20100630 | ||||
| 2a02:2050:: — 2a02:2050:ffff:ffff:ffff:ffff:ffff:ffff | United Kingdom | 2a02:2050::/32 | 296 | |
