asn.dev

Autonomous system

AS52172 ZGH

Unclassified RIPE

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

Summary

Zagrebački Holding

Croatia · AI-generated

business municipal holding croatia

The AS handle ZGH is held by Zagrebački Holding d.o.o., a municipal holding company owned by the City of Zagreb.

What it's used for

  • The address space carries a single /24 block with the netname ZGH-HR, registered to Zagrebački holding d.o.o.
  • The inventory consists of 256 IPv4 addresses across 1 prefix, with 1 observed routing neighbour, indicating a small, self-contained corporate network rather than a transit or access provider.
  • Traffic from this AS represents internal corporate infrastructure for the holding company, which manages a portfolio of public utility and communal services for the city of Zagreb.

Notable

  • The RDAP registrant matches the AS holder, with the netname ZGH-HR assigned to Zagrebački holding d.o.o.
  • The address inventory is minimal, consisting of a single contiguous /24 block, typical for a corporate entity managing its own internal network without large-scale external service delivery.

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
AS34594Telemach Hrvatska d.o.o.65

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-27, 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
HRCroatia1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS52172
Registry name
ZGH
Registrant
Zagrebacki holding d.o.o.
Abuse contact
telekomunikacije@zgh.hr
Registered
2011-01-19
Last changed
2022-12-09
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 1 with no ROA
ROAs
0 authorising AS52172
ASPA
no ASPA record
IRR
100% registered · 1 of 1 announcements
Route objects
1 naming AS52172

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: 446 networks and 1,852 prefixes, as published 2026-10-27. 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