asn.dev

Autonomous system

AS28972 MSOFT-AS Jihlava

Unclassified RIPE

IPv4 addresses 12.80K 6 prefixes
IPv6 prefixes 4 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 2 recorded by PCH
Upstreams 8 1 downstream
Flagged prefixes 0 none

Summary

M-SOFT

Czechia · AI-generated

isp residential czech cable

MSOFT-AS is operated by M-SOFT, spol. s r.o.

What it's used for

  • The address space carries residential and business access traffic, evidenced by reverse DNS entries such as ag-244-0.sta.ji.cz and ip-228-0.sta.ji.cz, which indicate static or dynamic customer endpoints in the Jihlava region.
  • With 12,800 IPv4 addresses announced across 6 prefixes and 30 observed neighbours, the network functions as a regional access provider rather than a transit hub, serving local subscribers in the Czech Republic.

Notable

  • Registrants for the majority of prefixes are consistent with the announcer, listing M-SOFT, spol. s r.o. for blocks including 79.141.240.0/20 and 213.226.224.0/20.
  • Two smaller prefixes, 193.143.252.0/24 and 193.143.255.0/24, are registered to Bohumil Kozich and MEMORY computers s.r.o., suggesting a separate or historical allocation within the same AS.
  • The inventory includes a mix of /20, /21, and /24 IPv4 blocks alongside four IPv6 prefixes, indicating a modernized infrastructure supporting both legacy and new address families.

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

Recorded at 2 exchanges in 1 country, largest first.

ExchangeLocationTheir address
Peering.czPrague, Czech Republic185.0.20.182
NIX.CZ - Neutral Internet eXchange for the Czech RepublicPrague, Czech Republic91.210.16.83

Transit providers

8 upstream, 1 downstream and 16 adjacent networks observed; most-used upstreams first.

ASNetworkPaths seen
AS39392SH.cz s.r.o.284
AS6939Hurricane Electric LLC92
AS1764Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH8
AS8218Zayo Infrastructure France SA8
AS24482SG.GS8
AS29504Freenet Liberec, z.s.8
AS37721Virtual Technologies & Solutions8
AS20562Broadband Hosting B.V.6

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-13, 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 6 prefixes · 12.80K addresses IPv6 4 prefixes

CountryNamePrefixes
CZCzechia10

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS28972
Registry name
MSOFT-AS
Registrant
MSOFT-MNT
Abuse contact
abuse@m-soft.cz
Registered
2003-04-24
Last changed
2023-09-21
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
63% valid · 5 valid, 3 with no ROA
ROAs
5 authorising AS28972
ASPA
no ASPA record
IRR
100% registered · 8 of 8 announcements
Route objects
17 naming AS28972

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: 436 networks and 1,771 prefixes, as published 2026-10-13. 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