MASTERNAUT GROUP HOLDINGS LIMITED

Masternaut Limited
Data as of 2026-09-20
GLEIF verified
LEI
5493007L1Q691IJBBY51
Registered name
MASTERNAUT GROUP HOLDINGS LIMITED
Jurisdiction
GB
Ultimate parent
No parent on file in GLEIF
This organisation
Netblocks29 · 2,320 IPv4 addresses
IPv6 6 prefixes (largest 2a00:ac40::/32)
Registered in France (13) · United Kingdom (10)
Also registered under this name 30 netblocks across 2 separate records
Record ID241532505
RegistryBGP
Owner jurisdictionGB
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 5493007L1Q691IJBBY51
Shared handles clustered on 10 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (29)

⬇ export CSV
CIDR Org name Registry Status Confidence
94.247.152.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.153.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.154.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.155.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.156.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.157.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.158.0/24 Masternaut Limited BGP ANNOUNCED ● high
94.247.159.0/24 Masternaut Limited BGP ANNOUNCED ● high
2a00:ac40::/48 Masternaut Limited BGP ANNOUNCED ● high
2a00:ac40:1::/48 Masternaut Limited BGP ANNOUNCED ● high
2a00:ac40:2::/48 Masternaut Limited BGP ANNOUNCED ● high
78.155.130.168/29 MASTERNAUT RIPE ASSIGNED PA ● low
78.155.141.192/28 MASTERNAUT RIPE ASSIGNED PA ● low
84.55.153.0/27 MASTERNAUT RIPE ASSIGNED PA ● low
84.55.154.0/27 MASTERNAUT RIPE ASSIGNED PA ● low
84.55.164.160/27 MASTERNAUT RIPE ASSIGNED PA ● low
84.55.184.208/28 MASTERNAUT RIPE ASSIGNED PA ● low
94.247.152.0/21 Masternaut Limited RIPE ALLOCATED PA ● low
195.7.98.168/29 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.98.176/29 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.101.56/29 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.101.80/29 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.104.160 – 195.7.104.223 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.116.136 – 195.7.116.151 MASTERNAUT RIPE ASSIGNED PA ● low
195.7.116.208/29 MASTERNAUT RIPE ASSIGNED PA ● low
195.59.29.176/28 MASTERNAUT RIPE ASSIGNED PA ● low
2a00:2381:e445::/56 MASTERNAUT-LTD RIPE ASSIGNED ● low
2a00:2381:e445::/48 MASTERNAUT-LTD RIPE AGGREGATED-BY-LIR ● low
2a00:ac40::/32 Masternaut Limited RIPE ALLOCATED-BY-RIR ● low

IPv6 ranges (6)

CIDR
2a00:ac40::/32
2a00:2381:e445::/48
2a00:ac40:1::/48
2a00:ac40:2::/48
2a00:ac40::/48
2a00:2381:e445::/56

Footprint over time

13 weekly snapshots · JSON
29 0 netblocks since 2026-07-05
2026-07-05 peak 29 2026-09-20

Network trust

what's this?
RPKI hygiene: B how networks compare →
93.1% of checked blocks have valid RPKI ROA coverage (27 of 29)
Possible discrepancies (2)

These blocks are registered to Masternaut 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:e445::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:e445::/56 /56 authorized for AS2856 — British Telecommunications Limited

NIC Handles

ALTITUDETELECOM-MNT AS49694 BTNET-MNT DUMY-RIPE DUMY-RIPE MNT-3XMSMNT MNT-3XMSMNT ORG-ML426-RIPE RIPE-NCC-HM-MNT VODAFONE-WORLDWIDE-MNTNER