asn.dev

Autonomous system

AS205839 SIOC-AS

Unclassified RIPE

IPv4 addresses 256 1 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly NL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

SIOC B.V.

Netherlands · AI-generated

business netherlands ipv4

The AS handle SIOC-AS is held by SIOC B.V.

What it's used for

  • The space carries a single IPv4 prefix, 89.18.183.0/24, with the netname NL-WORLDSTREAM-20060814 and registrant WorldStream B.V.
  • The inventory consists of 256 IPv4 addresses across 1 prefix, with 0 IPv6 prefixes announced
  • With 1 observed neighbour and a single /24 block, the address space is finely subdivided for a small corporate or internal estate rather than a large access network

Notable

  • The registrant WorldStream B.V. differs from the AS holder SIOC B.V., indicating the address space was originally allocated to WorldStream B.V.
  • The address inventory is a single contiguous /24 block, consistent with a legacy or leased allocation from a former operator

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
AS30870Trans-iX B.V.59

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-30, 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 · 256 addresses IPv6 0 prefixes

CountryNamePrefixes
NLNetherlands1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS205839
Registry name
SIOC-AS
Registrant
SIOC B.V.
Abuse contact
noc@urens.net
Registered
2017-05-22
Last changed
2020-11-16
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 1 valid, 0 with no ROA
ROAs
1 authorising AS205839
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS205839

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 1,849 prefixes, as published 2026-10-30. 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