asn.dev

Autonomous system

AS56900 WESTLINK

Unclassified RIPE

IPv4 addresses 2.05K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly FI
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

Westlink

Finland · AI-generated

isp residential fiber finland

The AS handle WESTLINK is operated by Westlink (Lansilinkki Oy).

What it's used for

  • The address space carries residential and business internet access, evidenced by the reverse DNS record 109-69-121-0.westlink.fi and the netname FI-LANSILINKKI-20091012.
  • The network announces 2048 IPv4 addresses across 2 prefixes and maintains 1 observed neighbour, a ratio characteristic of an access network providing last-mile connectivity rather than transit.
  • Traffic from this AS consists of subscriber eyeballs accessing the internet via Westlink's fiber infrastructure in Finland.

Notable

  • Registrants for both announced prefixes are listed as "LL Registry; Lansilinkki Oy; Abuse-C Role", which aligns with the AS holder identity.
  • The address inventory is compact, consisting of two contiguous /22 blocks (109.69.120.0/22 and 109.69.124.0/22) totaling 2048 addresses.

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
AS47605FNE-Finland Oy300

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-31, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
FIFinland2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS56900
Registry name
WESTLINK
Registrant
LANSILINKKI-MNT
Abuse contact
registry@westlink.fi
Registered
2011-06-07
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 5 valid, 0 with no ROA
ROAs
1 authorising AS56900
ASPA
no ASPA record
IRR
100% registered · 5 of 5 announcements
Route objects
1 naming AS56900

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: 447 networks and 1,845 prefixes, as published 2026-10-31. 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