asn.dev

Autonomous system

AS210500 STADT-WITHUR Stadt Winterthur

Unclassified RIPE

IPv4 addresses 1.02K 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Stadt Winterthur

Switzerland · AI-generated

government municipal switzerland

STADT-WITHUR is operated by Stadt Winterthur, the municipal government of Winterthur, Switzerland.

What it's used for

  • The address space carries municipal infrastructure, evidenced by the netname STADT-WITHUR and registrant Stadt Winterthur; Stadtverwaltung Winterthur Missbrauch-Meldestelle.
  • The AS announces 1024 IPv4 addresses across 1 prefix (193.8.88.0/22) with 2 observed neighbours, indicating a small, self-contained internal network rather than a transit or large-scale access provider.
  • Traffic consists of internal municipal services, administrative endpoints, and government web infrastructure for the city of Winterthur.

Notable

  • Registrants align with the announcer, listing Stadt Winterthur and Stadtverwaltung Winterthur Missbrauch-Meldestelle for the sole prefix.
  • The inventory consists of a single contiguous /22 block, typical of a municipal allocation 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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6730Sunrise GmbH126
AS13030Init7 (Switzerland) Ltd.114

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-02, 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 · 1.02K addresses IPv6 0 prefixes

CountryNamePrefixes
CHSwitzerland1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS210500
Registry name
STADT-WITHUR
Registrant
AS9108-MNT
Abuse contact
bruno.massoutier@win.ch
Registered
2021-11-10
Last changed
2021-11-10
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 4 with no ROA
ROAs
0 authorising AS210500
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS210500

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: 449 networks and 1,846 prefixes, as published 2026-11-03. 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