ASN AS20609 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS20609?

AS20609 is listed under KAZA.cz s.r.o..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS20609 KAZA.cz s.r.o. | IPGeolocation.io

ASN Lookup Tool

KAZA.cz s.r.o. kaza.cz

CZ 3 Routes

AS Data

AS20609

AS20609 – KAZA.cz s.r.o.

AS Number	20609
AS Name	kazaczsro
Organization	KAZA.cz s.r.o. (org-ks127-ripe)
Country	CZ
Website	kaza.cz
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	BUSINESS
Allocation Status	ASSIGNED
Registry	RIPE
Date Allocated	2015-08-07

ASN Intelligence API for production workflows

Use ASN data for AS20609 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
185.108.120.0/22	AS20609	KAZA.cz s.r.o.	KAZA.cz s.r.o.	1024
91.202.52.0/22	AS20609	KAZA.cz s.r.o.	KAZA.cz s.r.o.	1024
2a06:4ac0::/32	AS20609	KAZA.cz s.r.o.	KAZA.cz s.r.o.	~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 'AS20485 - AS20857'

as-block:       AS20485 - AS20857
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 'AS20609'

% Abuse contact for 'AS20609' is 'abuse@kaza.cz'

aut-num:        AS20609
as-name:        kazaczsro
org:            ORG-KS127-RIPE
import:         from AS6830 accept ANY
export:         to AS6830 announce AS20609
import:         from AS16019 accept ANY
export:         to AS16019 announce AS20609
import:         from AS25512 accept ANY
export:         to AS25512 announce AS20609
import:         from AS205863 accept AS205863
export:         to AS205863 announce ANY
import:         from AS20723 accept ANY
export:         to AS20723 announce ANY
import:         from AS204570 accept AS204570
export:         to AS204570 announce ANY
admin-c:        JK10304-RIPE
tech-c:         JK10304-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         cz-kazacz-1-mnt
created:        2015-08-07T15:40:30Z
last-modified:  2021-05-24T19:57:05Z
source:         RIPE

organisation:   ORG-KS127-RIPE
org-name:       KAZA.cz s.r.o.
country:        CZ
org-type:       LIR
address:        Jana Nerudy 1313
address:        69801
address:        Vesel� nad Moravou
address:        CZECH REPUBLIC
phone:          +420731520771
admin-c:        JK10304-RIPE
tech-c:         JK10304-RIPE
abuse-c:        AR32823-RIPE
mnt-ref:        cz-kazacz-1-mnt
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         cz-kazacz-1-mnt
created:        2015-07-08T15:35:44Z
last-modified:  2020-12-16T13:02:51Z
source:         RIPE # Filtered

person:         Jiri Kazik
address:        Jana Nerudy 1313, Veseli nad Moravou, CZ
phone:          +420731520771
nic-hdl:        JK10304-RIPE
mnt-by:         cz-kazacz-1-mnt
created:        2015-07-08T15:35:42Z
last-modified:  2016-04-16T01:31:13Z
source:         RIPE

% This query was served by the RIPE Database Query Service version 1.121.2 (BUSA)

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.ripe.net",
  "as_blocks" : [ {
    "as_block" : "AS20485 - AS20857",
    "description" : [ "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" ],
    "date_created" : "2018-11-22",
    "date_updated" : "2018-11-22",
    "source" : "RIPE"
  } ],
  "aut_nums" : [ {
    "aut_num" : "AS20609",
    "as_name" : "kazaczsro",
    "status" : "ASSIGNED",
    "import" : [ "from AS6830 accept ANY", "from AS16019 accept ANY", "from AS25512 accept ANY", "from AS205863 accept AS205863", "from AS20723 accept ANY", "from AS204570 accept AS204570" ],
    "export" : [ "to AS6830 announce AS20609", "to AS16019 announce AS20609", "to AS25512 announce AS20609", "to AS205863 announce ANY", "to AS20723 announce ANY", "to AS204570 announce ANY" ],
    "organization" : "ORG-KS127-RIPE",
    "admin_contacts" : [ "JK10304-RIPE" ],
    "tech_contacts" : [ "JK10304-RIPE" ],
    "mnt_by" : [ "RIPE-NCC-END-MNT", "cz-kazacz-1-mnt" ],
    "date_created" : "2015-08-07",
    "date_updated" : "2021-05-24",
    "source" : "RIPE"
  } ],
  "organization" : {
    "handle" : "ORG-KS127-RIPE",
    "name" : "KAZA.cz s.r.o.",
    "type" : "LIR",
    "address" : [ "Jana Nerudy 1313", "69801", "Vesel? nad Moravou", "CZECH REPUBLIC" ],
    "street" : "Jana Nerudy",
    "city" : "Vesel? Nad Moravou",
    "zip_code" : "69801",
    "country" : [ "CZ" ],
    "phone" : [ "+420731520771" ],
    "admin_contacts" : [ "JK10304-RIPE" ],
    "tech_contacts" : [ "JK10304-RIPE" ],
    "abuse_contacts" : [ "AR32823-RIPE" ],
    "mnt_ref" : [ "cz-kazacz-1-mnt", "RIPE-NCC-HM-MNT" ],
    "mnt_by" : [ "RIPE-NCC-HM-MNT", "cz-kazacz-1-mnt" ],
    "date_created" : "2015-07-08",
    "date_updated" : "2020-12-16",
    "source" : "RIPE",
    "addressCountry" : "CZECH REPUBLIC"
  },
  "administrative_contacts" : [ {
    "handle" : "JK10304-RIPE",
    "name" : "Jiri Kazik",
    "address" : [ "Jana Nerudy 1313, Veseli nad Moravou, CZ" ],
    "street" : "Jana Nerudy",
    "city" : "Veseli Nad Moravou",
    "country" : "CZ",
    "phone" : [ "+420731520771" ],
    "mnt_by" : [ "cz-kazacz-1-mnt" ],
    "date_created" : "2015-07-08",
    "date_updated" : "2016-04-16",
    "source" : "RIPE",
    "addressCountry" : "CZ"
  } ],
  "technical_contacts" : [ {
    "handle" : "JK10304-RIPE",
    "name" : "Jiri Kazik",
    "address" : [ "Jana Nerudy 1313, Veseli nad Moravou, CZ" ],
    "street" : "Jana Nerudy",
    "city" : "Veseli Nad Moravou",
    "country" : "CZ",
    "phone" : [ "+420731520771" ],
    "mnt_by" : [ "cz-kazacz-1-mnt" ],
    "date_created" : "2015-07-08",
    "date_updated" : "2016-04-16",
    "source" : "RIPE",
    "addressCountry" : "CZ"
  } ]
}

Peers

AS Number	Description	Country
AS25512	CD-Telematika a.s.	CZ
AS204570	KAZA.cz s.r.o.	CZ
AS6830	Liberty Global Europe Holding B.V.	NL
AS16019	Vodafone Czech Republic a.s.	CZ
AS205863	Stepan Pokorny	CZ
AS20723	AVONET, s.r.o.	CZ
AS25512	CD Telematika a.s.	CZ

Upstreams

AS Number	Description	Country
AS16019	Vodafone Czech Republic a.s.	CZ
AS25512	CD Telematika a.s.	CZ

Downstreams

AS Number	Description	Country
AS204570	KAZA.cz s.r.o.	CZ