asn.dev

Autonomous system

AS51137 VVS-MBH_AS

Unclassified RIPE

IPv4 addresses 2.05K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Stadtwerke Saarbrücken

Germany · AI-generated

utility municipal germany

VVS-MBH_AS is operated by Stadtwerke Saarbrücken GmbH.

What it's used for

  • The address space is registered under the netname DE-VVS-20100608 with registrants Stadtwerke Saarbrucken GmbH, SW-GmbH RoleAccount, and SW-GmbH Abuse Team.
  • The AS announces 2048 IPv4 addresses within a single /21 prefix and one IPv6 /32 prefix, with only 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or large access provider.
  • As a municipal utility, the traffic consists of internal corporate and operational systems for the city's energy and public services infrastructure.

Notable

  • The registrants align directly with the AS holder, confirming the space is owned and managed by Stadtwerke Saarbrücken.
  • The inventory is compact, consisting of a single contiguous IPv4 block and a single IPv6 prefix, typical of a corporate estate segmented for internal use.

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

2 upstream, 0 downstream and 3 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS9063VSE NET GmbH93
AS15965CEGECOM S.A.3

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 1 prefixes · 2.05K addresses IPv6 1 prefixes

CountryNamePrefixes
DEGermany2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS51137
Registry name
VVS-mbH_AS
Registrant
MNT-DE-VVS
Abuse contact
it@sw-sb.de
Registered
2010-06-08
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS51137
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS51137

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