| 37.25.44.0 - 37.25.47.255 | UK-CALLFLOW-20111223 | GB | ALLOCATED PA |
| 81.85.192.0 - 81.85.255.255 | UK-CALLFLOW-20020530 | GB | ALLOCATED PA |
| 91.151.240.0 - 91.151.255.255 | UK-CALLFLOW-20100916 | GB | ALLOCATED PA |
| 91.228.232.0 - 91.228.233.255 | UK-TROOLI | GB | ASSIGNED PI |
| 91.228.234.0 - 91.228.234.255 | UK-TROOLI | GB | ASSIGNED PI |
| 95.166.0.0 - 95.166.63.255 | UK-CALLFLOW-20090115 | GB | ALLOCATED PA |
| 98.96.160.0 - 98.96.175.255 | UK-CALLFLOW-20080306 | GB | ALLOCATED PA |
| 134.19.192.0 - 134.19.199.255 | UK-CALLFLOW-20111104 | GB | ALLOCATED PA |
| 134.65.128.0 - 134.65.159.255 | UK-CALLFLOW-19900730 | GB | LEGACY |
| 146.103.128.0 - 146.103.191.255 | UK-CALLFLOW-19921023 | GB | LEGACY |
| 147.28.96.0 - 147.28.127.255 | UK-TROOLI | GB | LEGACY |
| 156.67.32.0 - 156.67.35.255 | UK-TROOLI | GB | LEGACY |
| 176.20.128.0 - 176.20.191.255 | UK-CALLFLOW-20110519 | GB | ALLOCATED PA |
| 185.16.160.0 - 185.16.163.255 | UK-CALLFLOW-20130123 | GB | ALLOCATED PA |
| 185.122.192.0 - 185.122.195.255 | UK-CALLFLOW-20151022 | GB | ALLOCATED PA |
| 199.15.232.0 - 199.15.239.255 | UK-CALLFLOW-20120718 | GB | ALLOCATED PA |
| 2a04:200::/29 | UK-CALLFLOW-20130121 | GB | ALLOCATED-BY-RIR |
