asn.dev

Autonomous system

AS202191 SONJA

Unclassified APNIC

IPv4 addresses 768 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly BE
Exchanges 0 recorded by PCH
Upstreams 6 0 downstream
Flagged prefixes 0 none

Summary

SONJA

Belgium · AI-generated

business belgium corporate

The AS handle SONJA is held by Service Organisatie Nascholing Joint Venture en Administratie NV.

What it's used for

  • The address space carries corporate infrastructure, indicated by the netnames BE-SONJA-20190305 and KTN-TH associated with the registrant.
  • The AS announces 768 IPv4 addresses across 2 prefixes and maintains 6 observed neighbours, a ratio consistent with a small internal corporate estate rather than a transit or access network.
  • Traffic from this AS consists of internal office and administrative endpoints for the organization, which operates in the training and joint venture administration sector in Belgium.

Notable

  • The registrant for the primary prefix 185.26.208.0/23 matches the AS holder, while the secondary prefix 185.26.211.0/24 lists a generic abuse contact with the netname KTN-TH.
  • The address inventory is compact, comprising two small IPv4 blocks with no announced IPv6 prefixes.

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

6 upstream, 0 downstream and 6 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS6461Zayo Bandwidth55
AS50309Arcadiz Telecom NV48
AS3758SingNet36
AS703Verizon Business23
AS702Verizon Business12
AS701Verizon Business5

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 2 prefixes · 768 addresses IPv6 0 prefixes

CountryNamePrefixes
BEBelgium2

Registry

Allocation record

APNIC · via Atlas (registry + RDAP)
Registry
APNIC
Handle
AS202191
Registry name
SONJA
Registrant
mnt-ktn
Abuse contact
ictops.support@katoennatie.com
Registered
2014-03-18
Last changed
2019-09-17
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 3 valid, 0 with no ROA
ROAs
6 authorising AS202191
ASPA
no ASPA record
IRR
100% registered · 3 of 3 announcements
Route objects
7 naming AS202191

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 2026-10-30. 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