asn.dev

Autonomous system

AS29108 LEITWERT-RESEARCH

Unclassified RIPE

IPv4 addresses 5.63K 6 prefixes
IPv6 prefixes 6 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Leitwert GmbH

Germany · AI-generated

business consulting telecom germany

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. Source, and how to suggest an edit.

Interconnection

Peering at a glance

Full topology · Graph

Internet exchanges

No exchange port on file. Many exchanges publish no participant list, so this is not proof of absence.

Transit providers

1 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS39063Leitwert GmbH1,671

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-18, licensed CC BY-NC-SA 3.0. Transit is inferred from observed BGP paths, never declared by either party.

Address space

Summary

Shape and geography

IPv4 6 prefixes · 5.63K addresses IPv6 6 prefixes

CountryNamePrefixes
DEGermany12

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS29108
Registry name
LEITWERT-RESEARCH
Registrant
LEITWERT-MNT
Abuse contact
abuse@leitwert.net
Registered
2015-08-17
Last changed
2023-10-02
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 44 with no ROA
ROAs
0 authorising AS29108
ASPA
no ASPA record
IRR
100% registered · 44 of 44 announcements
Route objects
44 naming AS29108

Reputation

Classification and threat

Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.

Spamhaus DROP

Not on ASN-DROP The network as a whole is not listed.

No DROP prefixes None of its announced space is on the DROP prefix list.

Spamhaus DROP ("Don't Route Or Peer") lists space and networks run by, or hijacked for, spam and cybercrime operations: 443 networks and 1,784 prefixes, as published 2026-10-19. A short, high-confidence list, so a match is worth taking seriously, and absence from it says little on its own.

FBI IC3

No IC3 indicators Nothing from the FBI IC3 feed.

IC3 threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.

Elsewhere

Cross-check