asn.dev

Autonomous system

AS60016 ASFS3 Fiberstream 87 AG

Unclassified RIPE

IPv4 addresses 7.94K 11 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CH
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Fiberstream 87 AG

Switzerland · AI-generated

fiber residential switzerland access

ASFS3 is operated by Fiberstream 87 AG.

What it's used for

  • The address space carries fiber-to-the-home subscriber traffic, evidenced by netnames such as CH-FS-87-20140627 and Fiberstream-DHCP-Range, and reverse DNS entries like ip-254.fs87.ch.
  • The AS announces 7,936 IPv4 addresses across 11 prefixes while maintaining only 1 observed neighbour, a ratio characteristic of an access network terminating local traffic rather than providing transit.
  • Traffic from this AS consists of residential and small business internet access provided via fiber infrastructure in the Glarus region of Switzerland.

Notable

  • Registrants for the majority of prefixes are Fiberstream 87 AG, while other blocks are registered to EWS AG, Technische Betriebe Glarus, and taNET GmbH, indicating a mix of owned and leased or partner-managed address space.
  • The inventory consists of multiple /22 and /23 blocks, with one /24 block explicitly designated for DHCP services.

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 1 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS29655Trenka Informatik AG638

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-05, 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 11 prefixes · 7.94K addresses IPv6 0 prefixes

CountryNamePrefixes
CHSwitzerland11

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS60016
Registry name
ASFS3
Registrant
mnt-ch-fiberstream4-1
Abuse contact
info@fiberstream.ch
Registered
2017-11-15
Last changed
2019-11-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
9% valid · 1 valid, 10 with no ROA
ROAs
1 authorising AS60016
ASPA
no ASPA record
IRR
100% registered · 11 of 11 announcements
Route objects
16 naming AS60016

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: 453 networks and 1,854 prefixes, as published 2026-11-06. 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