AS209082 — SWLINES Swlines Ltd

AS209082 announces 3 IPv4 prefixes covering 1,792 addresses and 1 IPv6 prefixes.

About this network

SWLINES is operated by Swlines Ltd, a British software consultancy based in Bournemouth.

What it's used for

• The address space carries corporate infrastructure for a rail software company, with netnames UK-SWLINES-20151127, IC125-LONDON, and UK-KADFIRE-20170921 indicating internal network segments and a subsidiary or related entity.
• The AS announces 1792 IPv4 addresses across 3 prefixes and 1 IPv6 prefix, with only 2 observed neighbours, indicating a small, self-contained corporate network rather than a transit or access provider.
• Traffic from this AS consists of web services and API endpoints for Realtime Trains, an independent real-time train running information service for the UK, along with internal office and development systems.

Notable

• Registrants include Swlines Ltd, SWLINES NOC, and Kadfire Limited, with the largest prefix registered to Kadfire Network Operations Team, suggesting a relationship between the two entities or a historical acquisition.
• The inventory is finely subdivided into three distinct IPv4 blocks, consistent with an internal corporate estate segmented by function or site.

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

Announced prefixes

• 185.128.220.0/24
• 185.128.222.0/23
• 185.222.16.0/22
• 2a03:9ba0:203::/48

Upstream networks

• AS56595 Commsworld Ltd
• AS51945 ENLINK LTD

Adjacent networks

• AS56595 Commsworld Ltd
• AS51945 ENLINK LTD

Routing security

• RPKI: 8 valid, 0 invalid and 0 not-found announcements; 4 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 13 route objects.
• Listed in as-sets: AS-BSO, AS-CONNETU, AS-FLUENCY, AS-IXREACH.