AS31438 — SWMR-AS Citynet Marburg

AS31438 announces 2 IPv4 prefixes covering 3,072 addresses and 1 IPv6 prefixes.

About this network

SWMR-AS is operated by Stadtwerke Marburg GmbH.

What it's used for

• The address space carries municipal utility services, with registrant netnames DE-SWMR-20040507 and DE-SWMR-19990518 both attributed to Stadtwerke Marburg GmbH.
• The AS announces 3072 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while observing only 2 routing neighbours, a ratio consistent with a local access or service network rather than a transit provider.

Notable

• Registrants for both announced IPv4 prefixes align with the AS holder, Stadtwerke Marburg GmbH.
• The address inventory consists of two distinct IPv4 blocks, 83.137.64.0/21 and 212.89.196.0/22, alongside a single IPv6 prefix, 2a0d:5f00::/30.

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

Announced prefixes

• 83.137.64.0/21
• 212.89.196.0/22
• 2a0d:5f00::/30

Upstream networks

• AS9145 EWE TEL GmbH
• AS8881 1&1 Versatel GmbH

Adjacent networks

• AS9145 EWE TEL GmbH
• AS8881 1&1 Versatel GmbH