AS31004 — SBB-CFF-FFS Telecom SBB

AS31004 announces 4 IPv4 prefixes covering 2,048 addresses and 41 IPv6 prefixes.

About this network

SBB-CFF-FFS Telecom SBB is operated by Schweizerische Bundesbahnen SBB, the national railway company of Switzerland.

What it's used for

• The address space carries internal corporate infrastructure, evidenced by netnames such as SBB-NET-4, SBB-3, and sbb-ch, and registrants including SBB Telecom Management, SBB Security Operation Center, and SBB Telecom Operation Managment Center (OMC).
• The AS announces 2048 IPv4 addresses across 4 prefixes and 45 IPv6 prefixes, with only 3 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.

Notable

• Registrants consistently identify the Swiss Federal Railways and its internal telecom divisions, aligning with the announcer.
• The address inventory is finely subdivided into four /23 IPv4 blocks and numerous IPv6 prefixes, reflecting site-by-site segmentation typical of a large corporate estate.
• The presence of Swisscom IP-Plus Engineering in some registrant fields suggests collaboration or shared infrastructure with the national telecom provider for specific engineering or OMC functions.

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

Announced prefixes

• 91.230.140.0/23
• 193.203.120.0/23
• 194.116.210.0/23
• 194.150.244.0/23
• 2a00:4bc0::/37
• 2a00:4bc0:700::/40
• 2a00:4bc0:800::/37
• 2a00:4bc0:1000::/36
• 2a00:4bc0:2000::/40
• 2a00:4bc0:2101::/48
• 2a00:4bc0:2109::/48
• 2a00:4bc0:210d::/48
• 2a00:4bc0:210e::/47
• 2a00:4bc0:2110::/48
• 2a00:4bc0:2114::/46
• 2a00:4bc0:211a::/48
• 2a00:4bc0:2121::/48
• 2a00:4bc0:2129::/48
• 2a00:4bc0:212f::/48
• 2a00:4bc0:2138::/48
• 2a00:4bc0:213e::/47
• 2a00:4bc0:2140::/48
• 2a00:4bc0:2148::/48
• 2a00:4bc0:214b::/48
• 2a00:4bc0:2150::/48
• 2a00:4bc0:2152::/47
• 2a00:4bc0:2154::/47
• 2a00:4bc0:2157::/48
• 2a00:4bc0:215c::/46
• 2a00:4bc0:2161::/48
• 2a00:4bc0:2162::/47
• 2a00:4bc0:2164::/46
• 2a00:4bc0:2168::/45
• 2a00:4bc0:2170::/44
• 2a00:4bc0:2180::/43
• 2a00:4bc0:219d::/48
• 2a00:4bc0:219e::/47
• 2a00:4bc0:21a0::/43
• 2a00:4bc0:21c0::/42
• 2a00:4bc0:2200::/40
• 2a00:4bc0:2600::/39
• 2a00:4bc0:2800::/37
• 2a00:4bc0:3000::/36
• 2a00:4bc0:4000::/34
• 2a00:4bc0:8000::/33

Upstream networks

• AS8220 COLT Technology Services Group Limited
• AS6730 Sunrise GmbH
• AS3303 Swisscom (Schweiz) AG

Adjacent networks

• AS8220 COLT Technology Services Group Limited
• AS6730 Sunrise GmbH
• AS3303 Swisscom (Schweiz) AG

Internet exchanges

• SwissIX — Zurich, Switzerland