CITYFIBRE LIMITED

Cityfibre Limited
Data as of 2026-08-16
GLEIF verified
Complete entity footprint
3 linked clusters · 6,440 netblocks · 359,644 IPv4 addresses · 19 IPv6 prefixes
This organisation's clusters combined by evidence — shared operating domain enta.net — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
LEI
213800Y2KS3L5UB7US68
Registered name
CITYFIBRE LIMITED
Jurisdiction
GB
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks93 · 359,638 IPv4 addresses
IPv6 18 prefixes (largest 2001:4d48::/29)
Cluster ID222373574
RegistryBGP
Owner jurisdictionGB
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 213800Y2KS3L5UB7US68
Shared handles clustered on 20 shared RIR contact/maintainer handles
Registry names 7 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

8 weekly snapshots · JSON
105 -11 netblocks since 2026-07-05
2026-07-05 peak 116 2026-08-16

IP Ranges (93)

showing 50 of 93 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
5.57.80.135/32 CityFibre PEERINGDB ASSIGNED ● high
46.254.0.0/21 Cityfibre Limited BGP ANNOUNCED ● high
62.249.192.0/18 Cityfibre Limited BGP ANNOUNCED ● high
78.32.0.0/15 Cityfibre Limited BGP ANNOUNCED ● high
79.143.144.0/20 Cityfibre Limited BGP ANNOUNCED ● high
81.31.96.0/19 Cityfibre Limited BGP ANNOUNCED ● high
84.45.128.0/17 Cityfibre Limited BGP ANNOUNCED ● high
87.127.0.0/16 Cityfibre Limited BGP ANNOUNCED ● high
88.83.96.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.104.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.106.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.109.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.111.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.116.0/24 Cityfibre Limited BGP ANNOUNCED ● high
88.83.118.0/23 Cityfibre Limited BGP ANNOUNCED ● high
88.83.124.0/23 Cityfibre Limited BGP ANNOUNCED ● high
88.83.126.0/24 Cityfibre Limited BGP ANNOUNCED ● high
95.141.152.0/22 Cityfibre Limited BGP ANNOUNCED ● high
109.224.160.0/19 Cityfibre Limited BGP ANNOUNCED ● high
156.67.241.0/24 Cityfibre Limited BGP ANNOUNCED ● high
156.67.242.0/23 Cityfibre Limited BGP ANNOUNCED ● high
156.67.244.0/24 Cityfibre Limited BGP ANNOUNCED ● high
156.67.244.0/22 Cityfibre Limited BGP ANNOUNCED ● high
156.67.248.0/21 Cityfibre Limited BGP ANNOUNCED ● high
178.16.224.0/22 Cityfibre Limited BGP ANNOUNCED ● high
178.16.228.0/24 Cityfibre Limited BGP ANNOUNCED ● high
178.16.237.0/24 Cityfibre Limited BGP ANNOUNCED ● high
178.217.92.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.1.104.122/32 CityFibre PEERINGDB ASSIGNED ● high
185.81.192.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.81.193.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.81.194.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.81.195.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.101.148.0/22 Cityfibre Limited BGP ANNOUNCED ● high
185.129.72.0/22 Cityfibre Limited BGP ANNOUNCED ● high
185.129.73.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.129.74.0/23 Cityfibre Limited BGP ANNOUNCED ● high
185.142.84.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.142.85.0/24 Cityfibre Limited BGP ANNOUNCED ● high
185.146.44.0/23 Cityfibre Limited BGP ANNOUNCED ● high
185.220.12.0/22 Cityfibre Limited BGP ANNOUNCED ● high
188.39.0.0/16 Cityfibre Limited BGP ANNOUNCED ● high
193.35.217.0/24 Cityfibre Limited BGP ANNOUNCED ● high
193.37.208.0/22 Cityfibre Limited BGP ANNOUNCED ● high
195.66.224.151/32 CityFibre PEERINGDB ASSIGNED ● high
195.66.236.151/32 CityFibre PEERINGDB ASSIGNED ● high
195.66.244.11/32 CityFibre PEERINGDB ASSIGNED ● high
195.66.246.11/32 CityFibre PEERINGDB ASSIGNED ● high
195.74.96.0/19 Cityfibre Limited BGP ANNOUNCED ● high
195.80.2.0/24 Cityfibre Limited BGP ANNOUNCED ● high

IPv6 ranges (18)

showing the 15 largest allocations
CIDR
2001:4d48::/29
2a05:8940::/29
2001:4d48::/32
2a04:6580::/32
2a05:8940::/32
2a05:8941::/32
2a05:8942::/32
2a05:8943::/32
2a05:8944::/32
2a05:8945::/32
2a05:8946::/32
2a05:8947::/32
2001:7f8:17::2114:1/128
2001:7f8:4:1::2114:1/128
2001:7f8:4:2::2114:1/128

Network trust

what's this?
RPKI hygiene: B how networks compare →
88.6% of checked blocks have valid RPKI ROA coverage (93 of 105)
Possible discrepancies (3)

These blocks are registered to Cityfibre Limited but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

2a05:8943::/32 /32 authorized for AS3356 — Level 3 Parent, LLC
2a05:8944::/32 /32 authorized for AS3356 — Level 3 Parent, LLC
156.67.240.0/24 /24 authorized for AS204018 — ENTANET International Limited

NIC Handles

AS8468 AS8468 DUMY-RIPE DUMY-RIPE ENTANET-MNT ENTANET-MNT HRW-NOC LEVEL3-MNT LEVEL3-MNT MNT-CITYFIBRE MNT-CITYFIBRE ORG-CHL10-RIPE +8 more