asn.dev

Autonomous system

AS47493 WMS-AS

Residential RIPE

IPv4 addresses 8.19K 1 prefixes
IPv6 prefixes 1 counted as prefixes, not addresses
Countries 1 mostly CZ
Exchanges 1 recorded by PCH
Upstreams 1 0 downstream
Flagged prefixes 0 none

Summary

CEZNET s.r.o.

Czechia · AI-generated

isp residential regional czech

The AS handle WMS-AS is held by CEZNET s.r.o.

What it's used for

  • The address space carries residential and business internet access, evidenced by the reverse DNS record 254-wms.mesto-most.cz and the netname CZ-CEZNET21-20070202.
  • The AS announces 8192 IPv4 addresses and 1 IPv6 prefix, with 5 observed neighbours, indicating a regional access provider rather than a transit hub.
  • Traffic consists of subscriber eyeballs and local business endpoints for CEZNET's regional customer base in Czechia.

Notable

  • The RDAP registrant CEZNET s.r.o. aligns with the AS holder, confirming consistent ownership of the announced space.
  • The inventory consists of a single IPv4 prefix 77.237.128.0/19 and one IPv6 prefix 2a0a:4080::/32, representing a compact, contiguous address estate.

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 1 exchange in 1 country, largest first.

ExchangeLocationTheir address
Peering.czPrague, Czech Republic185.0.20.38

Transit providers

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

ASNetworkPaths seen
AS39791Telco Pro Services, a. s.92

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 1 prefixes · 8.19K addresses IPv6 1 prefixes

CountryNamePrefixes
CZCzechia2

Registry

Allocation record

RIPE · via Atlas (registry + RDAP)
Registry
RIPE
Handle
AS47493
Registry name
WMS-AS
Registrant
CEZNET-MNT
Abuse contact
dohled@ceznet.cz
Registered
2008-06-25
Last changed
2026-10-05
Allocation
allocated

Routing security

RPKI and IRR

Full detail
RPKI
100% valid · 2 valid, 0 with no ROA
ROAs
2 authorising AS47493
ASPA
no ASPA record
IRR
100% registered · 2 of 2 announcements
Route objects
2 naming AS47493

Reputation

Classification and threat

Residential Fixed-line consumer ISP. Addresses here are homes.

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