NORBAIN HOLDINGS LIMITED

NORBAIN-HOLDINGS

GLEIF verified

LEI

213800A24WJEIMOCFO03

Registered name

NORBAIN HOLDINGS LIMITED

Jurisdiction

Ultimate parent

No parent on file in GLEIF

Cluster stats

Netblocks	6
All fragments	10 blocks across 3 clusters
Cluster ID	205320802
Registry	RIPE
Owner jurisdiction	GB
Customers	find customers using this network →

Evidence & provenance ?

Attribution	GLEIF legal-entity match
Legal identity	LEI 213800A24WJEIMOCFO03
Shared handles	clustered on 4 shared RIR contact/maintainer handles
Registry names	4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

4 weekly snapshots · JSON

6 0 netblocks since 2026-07-05

2026-07-05 peak 6 2026-07-19

IP Ranges (6)

⬇ export CSV

CIDR	Org name	Registry	Status	Confidence
86.12.190.144/28	NORBAIN-HOLDINGS-LIMITED	RIPE	ASSIGNED PA	● low
217.33.172.232/29	NORBAIN-HOLDINGS	RIPE	ASSIGNED PA	● low
217.37.101.32/29	Norbain	RIPE	ASSIGNED PA	● low
2a00:2381:796::/48	NORBAIN	RIPE	AGGREGATED-BY-LIR	● low
2a00:2381:c0c3::/48	NORBAIN-HOLDINGS	RIPE	AGGREGATED-BY-LIR	● low
2a00:2381:c0c3:100::/56	NORBAIN-HOLDINGS	RIPE	ASSIGNED	● low

Corporate group (2 confirmed entities)

NORBAIN-SD-LIMITED 1 blocks

Possibly related to this organisation

what's this?

Same name family

Separately-registered clusters whose names share “NORBAIN” — often per-country or per-system registrations of the same brand, occasionally a different organisation sharing the name. Not counted in this organisation's own footprint.

NORBAIN-S 3 blocks

Combined view of all 3 name-family clusters →

Sub-allocations under carriers

IP blocks an ISP reassigned to a similarly-named customer — decoded from the ISP's own naming convention, not a direct registration.

NORBAINPT-NET via MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. sub-allocation
NORBAIN-SD-LIMITED via Virgin Media Limited sub-allocation

Network trust

what's this?

RPKI hygiene: A how networks compare →

100.0% of checked blocks have valid RPKI ROA coverage (6 of 6)

Possible discrepancies (3)

These blocks are registered to NORBAIN-HOLDINGS 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.

2a00:2381:796::/48 /48	authorized for AS2856 — British Telecommunications Limited
2a00:2381:c0c3::/48 /48	authorized for AS2856 — British Telecommunications Limited
2a00:2381:c0c3:100::/56 /56	authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS5089-MNT BTNET-MNT DUMY-RIPE DUMY-RIPE