asn.dev

Autonomous system

AS47983 OPTIMESYS

Unclassified RIPE

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

Summary

Cinia Oy

Finland · AI-generated

business telecom finland

OPTIMESYS is held by Cinia Oy.

What it's used for

  • The single announced prefix 185.173.152.0/22 carries the netname FI-CORENET-20161018, indicating core network infrastructure.
  • With 1024 IPv4 addresses and 2 observed neighbours, the low neighbour count relative to the address space suggests a focused internal or backbone role rather than broad transit or access.
  • As a telecommunications operator, this space supports core routing and interconnection traffic for Cinia's services.

Notable

  • The RDAP registrant Cinia Oy matches the current operator, while the AS handle OPTIMESYS reflects the former name Optimesys Cinia Oy.
  • The address inventory consists of a single contiguous /22 block, indicating a compact and unified allocation.

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
AS20904Cinia Oy46
AS719Elisa Oyj12

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-28, 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
FIFinland1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS47983
Registry name
optimesys
Registrant
CNFI-MNT
Abuse contact
abuse@cinia.fi
Registered
2016-10-24
Last changed
2025-10-20
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS47983
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS47983

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: 448 networks and 1,849 prefixes, as published 2026-10-29. 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