asn.dev

Autonomous system

AS201977 MZDII Miasto Zabrze

Unclassified RIPE

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

Summary

Miasto Zabrze

Poland · AI-generated

government municipal poland

MZDII is the autonomous system for Miasto Zabrze, the municipal government of Zabrze, Poland.

What it's used for

  • The space carries municipal network infrastructure, identified by the netname PL-MZDII-20140520 and registrant Zabrzanska Agencja Realizacji Inwestycji Sp. z o.o.; Miasto Zabrze.
  • The AS announces a single IPv4 prefix, 185.58.48.0/22, comprising 1024 addresses, with 0 IPv6 prefixes.
  • With only 2 observed neighbours, the network functions as a small, isolated municipal estate rather than a transit or large-scale access provider.
  • Traffic from this AS consists of internal municipal services, administrative endpoints, and infrastructure managed by the city's investment realization agency.

Notable

  • The registrant Zabrzanska Agencja Realizacji Inwestycji Sp. z o.o.; Miasto Zabrze aligns with the AS holder MZDII Miasto Zabrze, confirming the space is owned and operated by the city administration.
  • The address inventory is compact, consisting of a single /22 block, which is typical for a municipal network managing its own internal connectivity and services.

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, 1 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS15744Silesian University of Technology, Computer Centre118

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-11-01, 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
PLPoland1

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS201977
Registry name
MZDII
Registrant
MZDII-MNT
Abuse contact
abuse@miastozabrze.pl
Registered
2014-05-14
Last changed
2017-11-15
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
0% valid · 0 valid, 2 with no ROA
ROAs
0 authorising AS201977
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
5 naming AS201977

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: 449 networks and 1,846 prefixes, as published 2026-11-02. 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