ASN Lookup Tool

O2 Czech Republic, a.s. o2.cz CZ CZ 0 Routes

AS Data

AS20884

AS20884O2 Czech Republic, a.s.

AS Number 20884
AS Name CZ-CTNET-AS
Organization O2 Czech Republic, a.s.(org-stan1-ripe)
Country CZ
Website o2.cz
Number of IPv4 Routes 0
Number of IPv6 Routes 0
ASN type ISP
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 1970-01-01

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Use ASN data for AS20884 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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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 'AS20859 - AS20927'

as-block:       AS20859 - AS20927
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:        2018-11-22T15:27:27Z
last-modified:  2018-11-22T15:27:27Z
source:         RIPE

% Information related to 'AS20884'

% Abuse contact for 'AS20884' is 'abuse@o2.cz'

aut-num:        AS20884
as-name:        CZ-CTNET-AS
import:         from AS5610 action pref=100; accept ANY
import:         from AS3561 action pref=100; accept ANY
import:         from AS28725 action pref=100; accept AS28725
import:         from AS51328 action pref=100; accept AS51328
import:         from AS198248 action pref=100; accept AS198248
import:         from AS57294 action pref=100; accept AS57294
export:         to AS5610 announce AS-CTNET
export:         to AS3561 announce AS-CTNET
export:         to AS28725 announce ANY
export:         to AS51328 announce ANY
export:         to AS198248 announce ANY
export:         to AS57294 announce ANY
remarks:        =====
remarks:        customers
remarks:        =====
remarks:        COMANET-NETWORK
import:         from AS51382 action pref = 850; accept AS51382
export:         to AS51382 announce ANY;
remarks:        ========
remarks:        ON SEMICONDUCTOR CZECH REPUBLIC, s.r.o
import:         from AS21942 action pref = 850; accept AS21942
export:         to AS21942 announce {0.0.0.0/0};
remarks:        =====
org:            ORG-STaN1-RIPE
admin-c:        CZO2-RIPE
tech-c:         CZO2-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CZCTNET-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2023-05-26T07:57:52Z
source:         RIPE

organisation:   ORG-STaN1-RIPE
org-name:       O2 Czech Republic, a.s.
country:        CZ
org-type:       LIR
address:        Za Brumlovkou 266/2
address:        140 22
address:        Praha 4 - Michle
address:        CZECH REPUBLIC
phone:          +420 2 71466184
fax-no:         +420 2 71464414
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         CZO2-RIPE
abuse-c:        AR14410-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        AS5610-MTN
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         AS5610-MTN
created:        2004-04-17T11:04:17Z
last-modified:  2020-12-16T12:31:56Z
source:         RIPE # Filtered

role:           5610-Tech-and-Admin
address:        Za Brumlovkou 266/2
address:        Praha 4 - Michle, PSC 140 22
nic-hdl:        CZO2-RIPE
admin-c:        VAKO1-RIPE
admin-c:        MV96-RIPE
admin-c:        HVJI1-RIPE
tech-c:         VAKO1-RIPE
tech-c:         HVJI1-RIPE
abuse-mailbox:  abuse@o2.cz
org:            ORG-STaN1-RIPE
mnt-by:         AS5610-MTN
created:        2016-02-18T09:58:30Z
last-modified:  2018-04-20T10:44:21Z
source:         RIPE # Filtered

% 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
AS21942 RESERVED ZZ
AS5610 O2 Czech Republic, a.s. CZ
AS3561 CenturyLink Communications, LLC US
AS51328 RIPE Network Coordination Centre NL
AS198248 Richard Filip CZ
AS57294 Internet Expert s.r.o. CZ
AS51382 Ing. Leos Janouch CZ

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Frequently Asked Questions

ASN AS20884 is an Autonomous System Number used to identify a network for BGP internet routing.
AS20884 is listed under O2 Czech Republic, 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.