asn.dev

Autonomous system

AS25598 FENACO

Unclassified RIPE

IPv4 addresses 512 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 1 recorded by PCH
Upstreams 9 0 downstream
Flagged prefixes 0 none

Summary

fenaco

Switzerland · AI-generated

business corporate switzerland

The AS handle FENACO is operated by fenaco Genossenschaft.

What it's used for

  • The address space carries corporate infrastructure for fenaco, evidenced by reverse DNS entries such as dasur.fenaco.com, mailext.extern.fenaco.com, and dawth.fenaco.com.
  • The network announces 512 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, while maintaining 45 observed neighbours. This ratio of limited address space against a high number of peering partners indicates a transit-heavy or well-connected corporate network rather than a large-scale access provider.

Notable

  • Registrants for both announced IPv4 prefixes are consistent with the announcer, listing fenaco NOC and fenaco Genossenschaft.
  • The address inventory is compact, consisting of two /24 blocks in the 193.200.144.0 and 195.245.237.0 ranges, 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

Recorded at 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
SwissIXZurich, Switzerland91.206.52.231

Transit providers

9 upstream, 0 downstream and 15 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS8220COLT Technology Services Group Limited46
AS1836green.ch AG33
AS15576NTS workspace AG30
AS6939Hurricane Electric LLC28
AS6730Sunrise GmbH4
AS24482SG.GS3
AS34019Hivane Association3
AS48362Stadtwerke Feldkirch3

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 · 512 addresses IPv6 1 prefixes

CountryNamePrefixes
CHSwitzerland3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS25598
Registry name
FENACO
Registrant
fenaco-wan-mnt
Abuse contact
wan@fenaco.com
Registered
2003-01-24
Last changed
2022-12-22
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
6 authorising AS25598
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
7 naming AS25598

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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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