ASN Lookup Tool

Durnet.cz sro durnet.cz CZ CZ 1 Routes

AS Data

AS204405

AS204405Durnet.cz sro

AS Number 204405
AS Name DurnetCZ
Organization Durnet.cz sro(org-ds347-ripe)
Country CZ
Website durnet.cz
Number of IPv4 Routes 0
Number of IPv6 Routes 1
ASN type BUSINESS
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2018-03-16

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Use ASN data for AS204405 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
2a02:17a5::/32 ~79×10²⁷

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 'AS204405'

% Abuse contact for 'AS204405' is 'info@durnet.cz'

aut-num:        AS204405
as-name:        DurnetCZ
org:            ORG-DS347-RIPE
import:         from AS47232 accept ANY
export:         to AS47232 announce AS204405
import:         from AS39392 accept ANY
export:         to AS39392 announce AS204405
admin-c:        LR2038-RIPE
tech-c:         LR2038-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-Durnet
created:        2018-03-16T09:54:09Z
last-modified:  2020-11-16T17:52:12Z
source:         RIPE
sponsoring-org: ORG-GSa22-RIPE

organisation:   ORG-DS347-RIPE
org-name:       Durnet.cz sro
country:        CZ
org-type:       OTHER
address:        Dobrkovice 105
address:        763 07 Dobrkovice
abuse-c:        ADC1155-RIPE
mnt-ref:        MNT-Durnet
mnt-by:         MNT-Durnet
created:        2018-02-26T13:27:52Z
last-modified:  2022-12-01T17:10:46Z
source:         RIPE # Filtered

person:         Ladislav Ruzicka
address:        Kostnicka 2341
address:        Chomutov
address:        Czech Republic
phone:          +420604469324
mnt-by:         MNT-GRAPESC
nic-hdl:        LR2038-RIPE
created:        2008-04-29T08:12:40Z
last-modified:  2018-07-27T07:45:42Z
source:         RIPE # Filtered

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

Parsed Whois Response

Peers

AS Number Description Country
AS25248 RADIOKOMUNIKACE a.s. CZ
AS39392 SH.cz s.r.o. CZ
AS20723 AVONET, s.r.o. CZ
AS47232 ISP Alliance a.s. CZ

Upstreams

AS Number Description Country
AS25248 RADIOKOMUNIKACE a.s. CZ
AS20723 AVONET, s.r.o. CZ

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Frequently Asked Questions

ASN AS204405 is an Autonomous System Number used to identify a network for BGP internet routing.
AS204405 is listed under Durnet.cz sro.
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.