asn.dev

Autonomous system

AS203170 GERRIT-01

Unclassified RIPE

IPv4 addresses 1.54K 2 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly NL
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

GERRIT Diensten BV

Netherlands · AI-generated

business netherlands gerrit

GERRIT-01 is operated by GERRIT Diensten BV.

What it's used for

  • The address space carries corporate infrastructure for GERRIT and the Wilhelmina Ziekenhuis Assen, evidenced by netnames NL-GERRIT3-20141119 and WZA-NL-ASSEN and reverse DNS entries wijzijngerrit.nl and static.wza.nl.
  • The AS announces 1536 IPv4 addresses across 2 prefixes and 1 IPv6 prefix, with only 1 observed neighbour, indicating a small, isolated corporate network rather than a transit or access provider.
  • Traffic consists of internal corporate endpoints and hospital network infrastructure for the GERRIT engineering firm and its associated healthcare client.

Notable

  • Registrants differ between the two announced prefixes: 193.177.232.0/22 is registered to Stichting Wilhelmina Ziekenhuis Assen while 185.77.190.0/23 is registered to GERRIT Diensten BV, suggesting a multi-tenant or partner arrangement within the same AS.
  • The inventory is finely subdivided into two distinct IPv4 blocks and one IPv6 block, consistent with an internal corporate estate segmented by organizational unit.

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 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS35467DDFR IT Infra & Security B.V.214

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 · 1.54K addresses IPv6 1 prefixes

CountryNamePrefixes
NLNetherlands3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS203170
Registry name
GERRIT-01
Registrant
MNT-GERRIT
Abuse contact
functioneelbeheer@wijzijngerrit.nl
Registered
2016-03-17
Last changed
2022-04-12
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 4 valid, 0 with no ROA
ROAs
6 authorising AS203170
ASPA
no ASPA record
IRR
100% registered · 4 of 4 announcements
Route objects
4 naming AS203170

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