asn.dev

Autonomous system

AS39100 PFORZHEIM-AS

Unclassified RIPE

IPv4 addresses 512 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly DE
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Stadtverwaltung Pforzheim

Germany · AI-generated

government municipal internal

PFORZHEIM-AS is operated by Stadtverwaltung Pforzheim, the municipal administration of Pforzheim, Germany.

What it's used for

  • The address space carries internal municipal network traffic, identified by the netname PFORZHEIM-NET and registrant Stadtverwaltung Pforzheim.
  • The AS announces 512 IPv4 addresses within a single prefix (195.60.186.0/23) and maintains 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or access provider.
  • Traffic from this AS consists of internal communications for the city administration, which employs approximately 3,000 staff members across its offices in Pforzheim.

Notable

  • The RDAP registrant Stadtverwaltung Pforzheim matches the AS holder, confirming direct ownership of the address space.
  • The inventory consists of a single contiguous /23 block, representing a finely subdivided internal corporate estate for municipal 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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS553Universitaet Stuttgart57
AS12480ILK Internet GmbH Rechnerkommunikation im Internet2

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-19, 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 · 512 addresses IPv6 0 prefixes

CountryNamePrefixes
DEGermany1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS39100
Registry name
PFORZHEIM-AS
Registrant
de-swpstadtwerke-1-mnt
Abuse contact
abuse@pforzheim.de
Registered
2005-12-14
Last changed
2026-09-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS39100
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS39100

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: 442 networks and 1,778 prefixes, as published 2026-10-20. 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