asn.dev

Autonomous system

AS38952 MAFRA-CZ-AS

Unclassified RIPE

IPv4 addresses 2.05K 2 prefixes
IPv6 prefixes 0 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 0 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

MAFRA, a.s.

Czechia · AI-generated

media business corporate

MAFRA-CZ-AS is operated by MAFRA, a.s., a Czech media group headquartered in Prague.

What it's used for

  • The address space is registered to MAFRA, a.s.; IT Department with netnames CZ-MAFRA-CZ-20130130 and MAFRA-CZ, indicating internal corporate infrastructure.
  • The AS announces 2048 IPv4 addresses across 2 prefixes and maintains 1 observed neighbour, a ratio consistent with a small, self-contained corporate network rather than a transit or access provider.
  • Traffic from this AS consists of internal office workers, editorial staff, and web/API endpoints supporting the company's print, online, television, and radio media operations.

Notable

  • Registrants for both announced prefixes align with the AS holder, identifying MAFRA, a.s.; IT Department as the consistent owner.
  • The address inventory is compact, comprising two /22 blocks (185.17.116.0/22 and 194.79.52.0/22) with no IPv6 prefixes in the inventory.

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
AS5610O2 Czech Republic, a.s.118

Exchange presence is recorded rather than inferred: the directory collected by Packet Clearing House (https://www.pch.net/ixp/data) on 2026-10-26, 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 · 2.05K addresses IPv6 0 prefixes

CountryNamePrefixes
CZCzechia2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS38952
Registry name
MAFRA-CZ-AS
Registrant
MAFRA-MNT
Abuse contact
abuse@mafra.cz
Registered
2005-11-17
Last changed
2021-07-26
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS38952
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
6 naming AS38952

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: 445 networks and 1,817 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