Cambridge Fibre Networks Ltd.
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 3 · 1,280 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a0b:e540::/29) |
| All fragments | 8 blocks across 2 clusters |
| Cluster ID | 213349295 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
4 weekly snapshots · JSON
6
0 netblocks since 2026-07-12
2026-07-12
peak 6
2026-07-26
IP Ranges (3)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 185.219.108.0/22 | Cambridge Fibre Networks Ltd. | BGP | ANNOUNCED | ● high |
| 185.229.51.0/24 | Cambridge Fibre Networks Ltd. | BGP | ANNOUNCED | ● high |
| 2a0b:e540::/29 | Cambridge Fibre Networks Ltd. | BGP | ANNOUNCED | ● high |
IPv6 ranges (1)
| CIDR |
|---|
| 2a0b:e540::/29 |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(6 of 6)
No discrepancies found among checked blocks.
NIC Handles
AS205311
DUMY-RIPE
DUMY-RIPE
NETSERVERS-MNT
NETSERVERS-MNT
ORG-CFNL1-RIPE
RIPE-NCC-HM-MNT
uk-cfn-1-mnt
uk-cfn-1-mnt