COSTAR UK LIMITED
Costar UK Limited
Data as of 2026-07-26
GLEIF verified
Complete entity footprint
2 linked clusters ·
24 netblocks ·
12,044 IPv4 addresses ·
3 IPv6 prefixes
This organisation's clusters combined by evidence —
shared GLEIF corporate family
— not name similarity, so genuinely different organisations that share a name are excluded.
LEI
984500C10AE59S8KEE62
Registered name
COSTAR UK LIMITED
Jurisdiction
Cluster stats
| Netblocks | 11 · 8,204 IPv4 addresses |
| IPv6 | 3 prefixes (largest 2001:1a0a:8010:1b::/64) |
| Registered in | United Kingdom (7) · Netherlands (1) |
| Cluster ID | 214430762 |
| Registry | BGP |
| Owner jurisdiction | GB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 984500C10AE59S8KEE62 |
| Shared handles | clustered on 11 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
11
0 netblocks since 2026-07-05
2026-07-05
peak 11
2026-07-26
IP Ranges (11)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 212.9.192.0/22 | Costar UK Limited | BGP | ANNOUNCED | ● high |
| 212.9.193.0/24 | Costar UK Limited | BGP | ANNOUNCED | ● high |
| 212.9.196.0/24 | Costar UK Limited | BGP | ANNOUNCED | ● high |
| 212.9.216.0/23 | Costar UK Limited | BGP | ANNOUNCED | ● high |
| 80.85.81.0/30 | COSTAR_UK_LTD | RIPE | ASSIGNED PA | ● low |
| 185.83.42.76/30 | COSTAR_UK_LTD | RIPE | ASSIGNED PA | ● low |
| 185.83.42.100/30 | COSTAR_UK_LTD | RIPE | ASSIGNED PA | ● low |
| 212.9.192.0/19 | Costar UK Limited | RIPE | ALLOCATED PA | ● low |
| 2001:1a0a:8010:1b::/64 | COSTAR_UK_LTD | RIPE | ASSIGNED | ● low |
| 2001:1a0a:8010:1c::/64 | COSTAR_UK_LTD | RIPE | ASSIGNED | ● low |
| 2001:1a0a:8010:3f::/64 | COSTAR_UK_LTD | RIPE | ASSIGNED | ● low |
IPv6 ranges (3)
Corporate group (2 confirmed entities)
+1 additional unconfirmed candidate not shown — full list (JSON)- COSTAR GROUP Inc. 13 blocks
Network trust
what's this?
RPKI hygiene: C
how networks compare →
54.5%
of checked blocks have valid RPKI ROA coverage
(6 of 11)
No discrepancies found among checked blocks.
NIC Handles
AS29550-MNT
AS8942
DUMY-RIPE
DUMY-RIPE
EQUINIX-FULFIL-MNT
EQUINIX-MNT
EXPONENTIAL-E-MNT
LIR-UK-FOCUSNET-MNT
LIR-UK-FOCUSNET-MNT
ORG-FN6-RIPE
RIPE-NCC-HM-MNT