COLT TECHNOLOGY SERVICES GROUP LIMITED
COLT Technology Services Group Limited
GLEIF verified
Complete entity footprint
2 linked clusters ·
4,988 netblocks ·
77,859,907 IPv4 addresses
This organisation's clusters combined by evidence —
shared operating domain colt.net
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
213800PIMH7Q7M27DB82
Registered name
COLT TECHNOLOGY SERVICES GROUP LIMITED
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 503 · 3,133,717 IPv4 addresses |
| Registered in | United Kingdom (225) · Germany (81) · United States (30) · Japan (29) · Poland (20) · France (15) |
| Cluster ID | 208783377 |
| Registry | APNIC |
| Owner jurisdiction | GB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 213800PIMH7Q7M27DB82 |
| Shared handles | clustered on 100 shared RIR contact/maintainer handles |
| Registry names | 19 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
5 weekly snapshots · JSON
333
0 netblocks since 2026-07-05
2026-07-05
peak 333
2026-07-19
IP Ranges (503)
showing 50 of 503 — see all — ⬇ export CSV (free export limited to 500 rows — subscribe for the full export)| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 5.11.96.0/20 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 5.182.152.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 38.65.18.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 45.129.69.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 46.28.212.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 62.85.160.0/19 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 62.182.250.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 77.74.158.0/23 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 85.208.193.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.209.87.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.212.245.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.213.65.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.213.68.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.213.91.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.213.110.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.238.4.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 91.244.125.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 103.80.220.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 103.80.221.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 103.158.226.0/23 | Colt Technology Services India Pvt Ltd | APNIC | ASSIGNED PORTABLE | ● high |
| 103.158.226.0/24 | Colt Technology Services India Pvt Ltd | BGP | ANNOUNCED | ● high |
| 103.158.227.0/24 | Colt Technology Services India Pvt Ltd | BGP | ANNOUNCED | ● high |
| 109.107.145.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 129.35.17.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 129.35.20.0/23 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 129.35.85.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 139.138.235.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 141.98.45.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 148.188.0.0/20 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 148.188.192.0/20 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 148.188.224.0/22 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 148.188.232.0/21 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 155.137.0.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 155.137.1.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 155.137.2.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 155.137.3.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 155.137.7.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 156.118.0.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 156.118.6.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 156.118.8.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 157.239.128.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 157.239.129.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 158.156.155.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 158.156.162.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 158.156.172.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 158.156.182.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 158.156.193.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 161.17.0.0/16 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 161.17.0.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
| 163.199.254.0/24 | COLT Technology Services Group Limited | BGP | ANNOUNCED | ● high |
Domains hosted in this network
what's this?Network trust
what's this?
RPKI hygiene: C
how networks compare →
78.1%
of checked blocks have valid RPKI ROA coverage
(393 of 503)
Possible discrepancies (4)
These blocks are registered to COLT Technology Services Group Limited but cryptographically authorized for a different, unrelated network (4 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2003:fd:9815::/48 /48 | authorized for AS3320 — Deutsche Telekom AG |
| 154.16.166.0/24 /24 | authorized for AS834 — IPXO LLC |
| 185.247.126.0/24 /24 | authorized for AS212377 — Direccion General de la Guardia Civil |
| 194.33.183.0/24 /24 | authorized for AS2830 — Verizon Nederland B.V. |
NIC Handles
AA
AB34802-RIPE
AC2221-AP
AC2582-AP
AC2677-AP
ALL-MNT
ALPHALINK-MNT
AP708-AP
APNIC-HM
ARCOR-MNT
ARTFILES-MNT
AS12640-MNT
+88 more