ASN Lookup Tool

NAM system, a.s. nam.cz CZ CZ 4 Routes

AS Data

AS204351

AS204351NAM system, a.s.

AS Number 204351
AS Name NAM
Organization NAM system, a.s.(org-nsa125-ripe)
Country CZ
Website nam.cz
Number of IPv4 Routes 4
Number of IPv6 Routes 0
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2018-03-28

ASN Intelligence API for production workflows

Use ASN data for AS204351 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

IP Ranges

Route # IPs
185.241.243.0/24 256
185.241.242.0/24 256
185.241.241.0/24 256
185.241.240.0/24 256

Raw Whois Response

% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to 'AS203940 - AS205662'

as-block:       AS203940 - AS205662
descr:          RIPE NCC ASN block
remarks:        These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by:         RIPE-NCC-HM-MNT
created:        2026-03-05T15:29:31Z
last-modified:  2026-03-05T15:29:31Z
source:         RIPE

% Information related to 'AS204351'

% Abuse contact for 'AS204351' is 'abuse@nam.cz'

aut-num:        AS204351
as-name:        NAM
org:            ORG-NSA125-RIPE
import:         from AS25248 accept ANY
export:         to AS25248 announce AS204351
import:         from AS6830 accept ANY
export:         to AS6830 announce AS204351
admin-c:        PT8955-RIPE
admin-c:        PH8935-RIPE
tech-c:         PT8955-RIPE
tech-c:         PH8935-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         cz-nam-1-mnt
created:        2018-03-28T13:00:42Z
last-modified:  2023-07-25T07:13:19Z
source:         RIPE

organisation:   ORG-NSA125-RIPE
org-name:       NAM system, a.s.
country:        CZ
org-type:       LIR
address:        U Posty 1163/13
address:        73564
address:        Havirov
address:        CZECH REPUBLIC
phone:          +420596531140
admin-c:        PT8955-RIPE
admin-c:        PH8935-RIPE
tech-c:         PT8955-RIPE
tech-c:         PH8935-RIPE
abuse-c:        AR44690-RIPE
mnt-ref:        cz-nam-1-mnt
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         cz-nam-1-mnt
created:        2018-01-16T09:04:46Z
last-modified:  2023-07-25T07:11:34Z
source:         RIPE # Filtered

person:         Pavel Hofer
address:        U Posty 1163/13
address:        73564
address:        Havirov
address:        CZECH REPUBLIC
phone:          +420596531140
nic-hdl:        PH8935-RIPE
mnt-by:         cz-nam-1-mnt
created:        2020-05-14T05:44:22Z
last-modified:  2020-05-14T05:44:22Z
source:         RIPE

person:         Pavel Tac
address:        U Posty 1163/13
address:        73564
address:        Havirov
address:        CZECH REPUBLIC
phone:          +420596531140
nic-hdl:        PT8955-RIPE
mnt-by:         cz-nam-1-mnt
created:        2020-05-13T15:34:26Z
last-modified:  2020-05-13T15:34:26Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.121.1 (BUSA)

Parsed Whois Response

Peers

AS Number Description Country
AS28725 CETIN a.s. CZ
AS25248 RADIOKOMUNIKACE a.s. CZ
AS6830 Liberty Global Europe Holding B.V. NL
AS16019 Vodafone Czech Republic a.s. CZ

Upstreams

AS Number Description Country
AS28725 CETIN a.s. CZ
AS25248 RADIOKOMUNIKACE a.s. CZ
AS16019 Vodafone Czech Republic a.s. CZ

Ready to get started?Get Started with IP Intelligence API Today

CTA Illustration

Frequently Asked Questions

ASN AS204351 is an Autonomous System Number used to identify a network for BGP internet routing.
AS204351 is listed under NAM system, a.s..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.