asn.dev

Autonomous system

AS30731 MAZUR-AS

Unclassified RIPE

IPv4 addresses 1.79K 3 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly PL
Exchanges 0 recorded by PCH
Upstreams 2 0 downstream
Flagged prefixes 0 none

Summary

Uslugi Informatyczne Wieslaw Mazur

Poland · AI-generated

business isp poland small

MAZUR-AS is operated by Uslugi Informatyczne Wieslaw Mazur.

What it's used for

  • The address space carries business and IT services traffic, evidenced by the netname Mazur_NET and the registrant Uslugi Informatyczne Wieslaw Mazur (IT Services).
  • The AS announces 1792 IPv4 addresses across 3 prefixes with only 2 observed neighbours, a ratio indicating a small access or local business network rather than a transit provider.

Notable

  • Registrants largely align with the announcer, with Uslugi Informatyczne Wieslaw Mazur holding the two largest prefixes (195.22.96.0/22 and 195.254.138.0/23).
  • The smallest prefix, 91.236.130.0/24, is registered to Pawel Staszewski trading as ITCare under the netname ITCare, suggesting a separate or acquired entity within the same AS.
  • The inventory consists of three distinct IPv4 blocks in Poland, with no IPv6 prefixes announced.

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

2 upstream, 0 downstream and 2 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS35179Korbank S. A.461
AS8308PANSTWOWY INSTYTUT BADAWCZY63

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-22, 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 3 prefixes · 1.79K addresses IPv6 0 prefixes

CountryNamePrefixes
PLPoland3

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS30731
Registry name
MAZUR-AS
Registrant
MAZUR-MNT
Abuse contact
abuse@nask.pl
Registered
2009-08-06
Last changed
2018-09-04
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
11% valid · 1 valid, 8 with no ROA
ROAs
1 authorising AS30731
ASPA
no ASPA record
IRR
100% registered · 9 of 9 announcements
Route objects
9 naming AS30731

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: 442 networks and 1,779 prefixes, as published 2026-10-23. 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