AS6779 — ICLNET-AS Fujitsu AS

AS6779 announces 1 IPv4 prefixes covering 1,024 addresses and 0 IPv6 prefixes.

About this network

ICLNET-AS — the corporate network of Fujitsu Services Ltd, the UK arm of Fujitsu. The handle is a fossil: ICL stands for International Computers Limited, the British computer manufacturer that Fujitsu absorbed and renamed Fujitsu Services.

What it's used for

• Fujitsu's own UK enterprise and IT-services network. It is a small, self-contained corporate estate, announcing only a pair of /23s.

Notable

• A textbook name fossil: the registry still says ICLNET decades after the ICL brand was retired. The AS number belongs to the acquiring company today.
• Do not read this as a UK service-provider network — it is Fujitsu's own corporate address space, not customer or hosting capacity.

Interesting

• The AS number is low and long-held, but the address block it announces (185.13.48.0/22) is a much later RIPE allocation — a reminder that a legacy AS number says nothing about the age of the prefixes behind it.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 185.13.48.0/22

Upstream networks

• AS49572 Fujitsu Services Ltd.

Adjacent networks

• AS49572 Fujitsu Services Ltd.

Routing security

• RPKI: 1 valid, 0 invalid and 1 not-found announcements; 1 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 3 route objects.
• Listed in as-sets: AS-BSVE:AS-LINX-PEERS-1, AS-BSVE:AS-LINX-PEERS-2, AS-CWCUSTEU, AS-DDITS:AS-PEERS, AS-DOCLER:AS-PEERS, AS-FJNET, AS-ICLNET, AS49572:AS-FCN, AS51202:AS-ALL.

Internet exchanges

• LINX LON1 — London, United Kingdom