CALASTONE LIMITED

Calastone Limited
GLEIF verified
LEI
894500EE472N5MWWAE18
Registered name
CALASTONE LIMITED
Jurisdiction
GB
Ultimate parent
No parent on file in GLEIF
Cluster stats
Netblocks7 · 556 IPv4 addresses
Registered in United Kingdom (2) · United States (2)
Cluster ID210400021
RegistryBGP
Owner jurisdictionGB
Customersfind customers using this network →
Evidence & provenance ?
Attribution GLEIF legal-entity match
Legal identityLEI 894500EE472N5MWWAE18
Shared handles clustered on 4 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
7 0 netblocks since 2026-07-05
2026-07-05 peak 7 2026-07-19

IP Ranges (7)

⬇ export CSV
CIDR Org name Registry Status Confidence
206.62.32.0/24 Calastone Limited BGP ANNOUNCED ● high
206.62.33.0/24 Calastone Limited BGP ANNOUNCED ● high
217.33.20.32/27 CALASTONE RIPE ASSIGNED PA ● low
217.38.157.0/28 CALASTONE-LTD RIPE ASSIGNED PA ● low
2a00:2381:62c::/48 CALASTONE RIPE AGGREGATED-BY-LIR ● low
2a00:2381:62c::/56 CALASTONE RIPE ASSIGNED ● low
2a00:2381:62c:100::/56 CALASTONE-LTD RIPE ASSIGNED ● low

Network trust

what's this?
RPKI hygiene: C how networks compare →
71.4% of checked blocks have valid RPKI ROA coverage (5 of 7)
Possible discrepancies (3)

These blocks are registered to Calastone 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.

2a00:2381:62c::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:62c::/56 /56 authorized for AS2856 — British Telecommunications Limited
2a00:2381:62c:100::/56 /56 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS212601 BTNET-MNT DUMY-RIPE DUMY-RIPE