HEATHROW AIRPORT LIMITED
Heathrow Airport Limited
Data as of 2026-08-16
GLEIF verified
LEI
549300J5R8AWMHPE7O05
Registered name
HEATHROW AIRPORT LIMITED
Jurisdiction
Ultimate parent
No parent on file in GLEIF
Cluster stats
| Netblocks | 11 · 1,112 IPv4 addresses |
| IPv6 | 5 prefixes (largest 2a00:2381:3820::/48) |
| Cluster ID | 223287721 |
| Registry | RIPE |
| Owner jurisdiction | GB |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | GLEIF legal-entity match |
| Legal identity | LEI 549300J5R8AWMHPE7O05 |
| Shared handles | clustered on 6 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
8 weekly snapshots · JSON
11
0 netblocks since 2026-07-05
2026-07-05
peak 11
2026-08-16
IP Ranges (11)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 81.144.254.32/27 | HEATHROW-T2 | RIPE | ASSIGNED PA | ● low |
| 86.188.132.64/28 | HEATHROW-T2 | RIPE | ASSIGNED PA | ● low |
| 185.143.36.0/22 | Heathrow Airport Limited | RIPE | ALLOCATED PA | ● low |
| 194.75.238.64/27 | HEATHROW-T4 | RIPE | ASSIGNED PA | ● low |
| 194.75.238.208/30 | HEATHROW-T4 | RIPE | ASSIGNED PA | ● low |
| 213.123.62.68/30 | HEATHROW-T4 | RIPE | ASSIGNED PA | ● low |
| 2a00:2381:3820::/56 | HEATHROW-T4 | RIPE | ASSIGNED | ● low |
| 2a00:2381:3820::/48 | HEATHROW-T4 | RIPE | AGGREGATED-BY-LIR | ● low |
| 2a00:2381:c6f4::/48 | HEATHROW-T2 | RIPE | AGGREGATED-BY-LIR | ● low |
| 2a00:2381:c6f4::/56 | HEATHROW-T2 | RIPE | ASSIGNED | ● low |
| 2a00:2381:c6f4:100::/56 | HEATHROW-T2 | RIPE | ASSIGNED | ● low |
IPv6 ranges (5)
Network trust
what's this?
RPKI hygiene: B
how networks compare →
90.9%
of checked blocks have valid RPKI ROA coverage
(10 of 11)
Possible discrepancies (5)
These blocks are registered to Heathrow Airport Limited but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:3820::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
| 2a00:2381:c6f4::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
| 2a00:2381:3820::/56 /56 | authorized for AS2856 — British Telecommunications Limited |
| 2a00:2381:c6f4::/56 /56 | authorized for AS2856 — British Telecommunications Limited |
| 2a00:2381:c6f4:100::/56 /56 | authorized for AS2856 — British Telecommunications Limited |
NIC Handles
BTNET-MNT
DUMY-RIPE
DUMY-RIPE
ORG-HAL3-RIPE
RIPE-NCC-HM-MNT
uk-heathrow-1-mnt