asn.dev

Autonomous system

AS21269 WIWIS-AS

Unclassified RIPE

IPv4 addresses 1.28K 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Progon Network Engineering

Switzerland · AI-generated

switzerland engineering small ipv6

The AS handle WIWIS-AS is held by Christian Wittenhorst trading as Progon Network Engineering.

What it's used for

  • The address space carries prefixes with netnames CH-WIWI-20190307 and CH-PROGON-PI-0, both registered to the holder.
  • The network announces 1280 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small, self-contained network rather than a transit provider.

Notable

  • The registrants for both announced IPv4 prefixes match the AS holder, Christian Wittenhorst trading as Progon Network Engineering.
  • The address inventory consists of one /22 block and one /24 block in IPv4, alongside a single /32 IPv6 prefix.

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
AS34288Kantonsschule Zug158

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-16, 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 2 prefixes · 1.28K addresses IPv6 1 prefixes

CountryNamePrefixes
CHSwitzerland3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS21269
Registry name
wiwis-AS
Registrant
Christian Wittenhorst trading as Progon Network Engineering
Abuse contact
abuse@progon.net
Registered
2001-10-11
Last changed
2020-03-18
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
3 authorising AS21269
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
4 naming AS21269

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 1,783 prefixes, as published 2026-10-17. 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