FactSet GmbH

Data as of 2026-10-11
BGP inherited
This organisation
Netblocks9 · 4,360 IPv4 addresses
IPv6 3 prefixes (largest 2a02:fd00::/29)
Registered in Germany (5) · United Kingdom (2)
Also registered under this name 52 netblocks across 11 separate records
Record ID245571415
RegistryBGP
Customerssee who runs inside this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 9 shared RIR contact/maintainer handles
Registry names 3 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

IP Ranges (9)

⬇ export CSV
CIDR Org name Registry Status Confidence
213.173.171.0/24 FactSet GmbH BGP ANNOUNCED ● high
217.11.192.0/20 FactSet GmbH BGP ANNOUNCED ● high
217.11.192.0/21 FactSet GmbH BGP ANNOUNCED ● high
217.11.200.0/21 FactSet GmbH BGP ANNOUNCED ● high
217.11.203.0/24 FactSet GmbH BGP ANNOUNCED ● high
2a02:fd00::/29 FactSet GmbH BGP ANNOUNCED ● high
213.120.215.112/29 FACTSET RIPE ASSIGNED PA ● low
2a00:2381:308::/48 FACTSET RIPE AGGREGATED-BY-LIR ● low
2a00:2381:308::/56 FACTSET RIPE ASSIGNED ● low

IPv6 ranges (3)

Footprint over time

16 weekly snapshots · JSON
11 +1 netblocks since 2026-07-05
2026-07-05 peak 11 2026-10-11

Other domains hosted in this network

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Network trust

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RPKI hygiene: D how networks compare →
36.4% of checked blocks have valid RPKI ROA coverage (4 of 11)
Possible discrepancies (2)

These blocks are registered to FactSet GmbH 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.

2a00:2381:308::/48 /48 authorized for AS2856 — British Telecommunications Limited
2a00:2381:308::/56 /56 authorized for AS2856 — British Telecommunications Limited

NIC Handles

AS15613 BTNET-MNT COLT-CH-MNT DUMY-RIPE DUMY-RIPE ISG-MNT ISG-MNT ORG-ISA2-RIPE RIPE-NCC-HM-MNT