AS29108 — LEITWERT-RESEARCH

AS29108 announces 8 IPv4 prefixes covering 5,376 addresses and 6 IPv6 prefixes.

About this network

The AS handle LEITWERT-RESEARCH is held by Leitwert GmbH.

What it's used for

• The address space is registered under netnames such as DE-LEITWERT-20080722 and DE-LEITWERT-20190802, all attributed to Leitwert Research; Leitwert GmbH.
• The AS announces 5632 IPv4 addresses across 6 prefixes and 7 IPv6 prefixes, while maintaining only 1 observed neighbour, indicating a small-scale internal or corporate network rather than a transit provider.

Notable

• All registrants for the announced prefixes consistently identify as Leitwert Research; Leitwert GmbH, matching the AS holder.
• The address inventory consists of a mix of /21, /22, and /24 blocks, including ranges in the 94.136.160.0/21 and 45.136.160.0/22 spaces, reflecting a modest corporate estate.

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

Announced prefixes

• 45.136.160.0/22
• 94.136.160.0/22
• 94.136.165.0/24
• 94.136.166.0/23
• 185.91.44.0/22
• 185.103.44.0/22
• 194.140.242.0/24
• 194.140.249.0/24
• 2a05:e740:1142::/48
• 2a05:e740:1144::/46
• 2a05:e740:1149::/48
• 2a05:e740:1944::/46
• 2a05:e740:4160::/46
• 2a05:e740:9160::/45

Upstream networks

• AS39063 Leitwert GmbH

Adjacent networks

• AS39063 Leitwert GmbH

Routing security

• RPKI: 0 valid, 0 invalid and 44 not-found announcements; 0 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 44 route objects.
• Listed in as-sets: AS-HURRICANE, AS-HURRICANEV6, AS-LEITWERT, AS-LEITWERT-IXP, AS-TRANSROUTE-SPEC.