AS number details


INTERNET CZ, a.s.  ·

AS24806 – INTERNET CZ, a.s.

Country Czech Republic
Hosted domains 332,666
Number of IPs 45,824
ASN type Hosting
Allocated 20 years ago on Sep 24, 2002

IP Address Ranges

Netblock Company Num of IPs INTERNET CZ, a.s. 1,024 AlphaNet spolka z o. o. 1,024 INTERNET CZ, a.s. 1,024 BlazeArts Kft. 1,024 ASPone, s.r.o. 256 ASPone, s.r.o. 512 Aruba S.p.A. 8,192 Aruba S.p.A. 256 INTERNET CZ, a.s. 4,096 Cloud Services CZ1 8,192 Cloud Services CZ1 256 INTERNET CZ, a.s. 16,384 webhosting services 256 Cloud Services CZ1 4,096
Netblock Company
2001:15e8::/32 INTERNET CZ, a.s.
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WHOIS Details

as-block:       AS24802 - AS24834
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:        2018-11-22T15:27:29Z
last-modified:  2018-11-22T15:27:29Z
source:         RIPE

aut-num:        AS24806
org:            ORG-ICa1-RIPE
as-name:        INTERNET-CZ
descr:          Ktis 2, 384 03 Ktis, CZ
import:         from AS174 accept ANY
import:         from AS6830 accept ANY
export:         to AS174 announce AS-INTERNETCZ
export:         to AS6830 announce AS-INTERNETCZ
import:         from AS1257 accept AS-TELE2
import:         from AS1902 accept AS-CTT-IT
import:         from AS2686 accept AS-IGNEMEA
import:         from AS2819 accept AS-GTSCZ-NIX
import:         from AS2852 accept AS-CESNET
import:         from AS5407 accept AS5407
import:         from AS5610 accept AS-CTIOL
import:         from AS6881 accept AS-NIX
import:         from AS8422 accept AS-NETCOLOGNE
import:         from AS8593 accept AS8593
import:         from AS8747 accept AS-INWAY
import:         from AS8913 accept AS8913
import:         from AS9080 accept AS-GIN-NIX
import:         from AS9148 accept AS-TGCZ-NIX
import:         from AS12306 accept AS-PLUSLINE
import:         from AS12570 accept AS12570
import:         from AS12767 accept AS-PRAGONET-NIX
import:         from AS13036 accept AS13036
import:         from AS15494 accept AS-BTCZ
import:         from AS15685 accept AS-CASABLANCA
import:         from AS15935 accept AS-HA-VEL-CZNIX
import:         from AS16019 accept AS16019
import:         from AS16075 accept AS-ETELGROUP
import:         from AS16246 accept AS16246
import:         from AS20723 accept AS20723
import:         from AS21430 accept AS21430
import:         from AS21435 accept AS21435
import:         from AS24828 accept AS24828
import:         from AS24930 accept AS-CECOMCZ-NIX
import:         from AS24971 accept AS-MASTERCZ-CZNIX
import:         from AS25192 accept AS25192
import:         from AS25234 accept AS25234
import:         from AS25248 accept AS-BLUETONE-CUST
import:         from AS25424 accept AS25424
import:         from AS25512 accept AS25512
import:         from AS28725 accept AS28725
import:         from AS29086 accept AS29086
import:         from AS29134 accept AS29134
import:         from AS29208 accept as-dialtelecom
import:         from AS29321 accept AS-CentroNet
import:         from AS30134 accept AS30134
import:         from AS31246 accept AS-NETBOX-CZNIX
import:         from AS33883 accept AS33883
export:         to AS1257 announce AS-INTCZ-NIX
export:         to AS1902 announce AS-INTCZ-NIX
export:         to AS2686 announce AS-INTCZ-NIX
export:         to AS2819 announce AS-INTCZ-NIX
export:         to AS2852 announce AS-INTCZ-NIX
export:         to AS5407 announce AS-INTCZ-NIX
export:         to AS5610 announce AS-INTCZ-NIX
export:         to AS6706 announce AS-INTCZ-NIX
export:         to AS6881 announce AS-INTCZ-NIX
export:         to AS8422 announce AS-INTCZ-NIX
export:         to AS8593 announce AS-INTCZ-NIX
export:         to AS8747 announce AS-INTCZ-NIX
export:         to AS8913 announce AS-INTCZ-NIX
export:         to AS9080 announce AS-INTCZ-NIX
export:         to AS9148 announce AS-INTCZ-NIX
export:         to AS12306 announce AS-INTCZ-NIX
export:         to AS12570 announce AS-INTCZ-NIX
export:         to AS12767 announce AS-INTCZ-NIX
export:         to AS13036 announce AS-INTCZ-NIX
export:         to AS15494 announce AS-INTCZ-NIX
export:         to AS15685 announce AS-INTCZ-NIX
export:         to AS15935 announce AS-INTCZ-NIX
export:         to AS16019 announce AS-INTCZ-NIX
export:         to AS16075 announce AS-INTCZ-NIX
export:         to AS16246 announce AS-INTCZ-NIX
export:         to AS20723 announce AS-INTCZ-NIX
export:         to AS21430 announce AS-INTCZ-NIX
export:         to AS21435 announce AS-INTCZ-NIX
export:         to AS24828 announce AS-INTCZ-NIX
export:         to AS24930 announce AS-INTCZ-NIX
export:         to AS24971 announce AS-INTCZ-NIX
export:         to AS25192 announce AS-INTCZ-NIX
export:         to AS25234 announce AS-INTCZ-NIX
export:         to AS25248 announce AS-INTCZ-NIX
export:         to AS25424 announce AS-INTCZ-NIX
export:         to AS25512 announce AS-INTCZ-NIX
export:         to AS28725 announce AS-INTCZ-NIX
export:         to AS29086 announce AS-INTCZ-NIX
export:         to AS29134 announce AS-INTCZ-NIX
export:         to AS29208 announce AS-INTCZ-NIX
export:         to AS29321 announce AS-INTCZ-NIX
export:         to AS30134 announce AS-INTCZ-NIX
export:         to AS31246 announce AS-INTCZ-NIX
export:         to AS33883 announce AS-INTCZ-NIX
import:         from AS2607 accept AS2607
import:         from AS5578 accept AS5578
import:         from AS5628 accept AS5628
import:         from AS6658 accept AS6658
import:         from AS6726 accept AS6726
import:         from AS6855 accept AS6855
import:         from AS6862 accept AS6862
import:         from AS8264 accept AS8264
import:         from AS8620 accept AS8620
import:         from AS8778 accept AS8778
import:         from AS12426 accept AS12426
import:         from AS12508 accept AS12508
import:         from AS12905 accept AS12905
import:         from AS15955 accept AS15955
import:         from AS15962 accept AS15962
import:         from AS16160 accept AS16160
import:         from AS16295 accept AS16295
import:         from AS16367 accept AS16367
import:         from AS20579 accept AS20579
import:         from AS21019 accept AS21019
import:         from AS21460 accept AS21460
import:         from AS24744 accept AS24744
import:         from AS24930 accept AS-CECOMCZ-SIX
import:         from AS24980 accept AS24980
import:         from AS25496 accept AS25496
import:         from AS29208 accept AS29208
import:         from AS29405 accept AS29405
import:         from AS31117 accept AS31117
import:         from AS31127 accept AS31127
import:         from AS31679 accept AS31679
export:         to AS2607 announce AS-INTERNETCZ
export:         to AS5578 announce AS-INTERNETCZ
export:         to AS5628 announce AS-INTERNETCZ
export:         to AS6658 announce AS-INTERNETCZ
export:         to AS6726 announce AS-INTERNETCZ
export:         to AS6855 announce AS-INTERNETCZ
export:         to AS6862 announce AS-INTERNETCZ
export:         to AS8264 announce AS-INTERNETCZ
export:         to AS8620 announce AS-INTERNETCZ
export:         to AS8778 announce AS-INTERNETCZ
export:         to AS12426 announce AS-INTERNETCZ
export:         to AS12508 announce AS-INTERNETCZ
export:         to AS12905 announce AS-INTERNETCZ
export:         to AS15955 announce AS-INTERNETCZ
export:         to AS15962 announce AS-INTERNETCZ
export:         to AS16160 announce AS-INTERNETCZ
export:         to AS16295 announce AS-INTERNETCZ
export:         to AS16367 announce AS-INTERNETCZ
export:         to AS20579 announce AS-INTERNETCZ
export:         to AS21019 announce AS-INTERNETCZ
export:         to AS21460 announce AS-INTERNETCZ
export:         to AS24744 announce AS-INTERNETCZ
export:         to AS24930 announce AS-INTERNETCZ
export:         to AS24980 announce AS-INTERNETCZ
export:         to AS25496 announce AS-INTERNETCZ
export:         to AS29208 announce AS-INTERNETCZ
export:         to AS29405 announce AS-INTERNETCZ
export:         to AS31117 announce AS-INTERNETCZ
export:         to AS31127 announce AS-INTERNETCZ
export:         to AS31679 announce AS-INTERNETCZ
import:         from AS5507 accept AS-BIX
export:         to AS5507 announce AS-INTERNETCZ
remarks:        peering contact:
remarks:        noc contact:
admin-c:        ES4377-RIPE
tech-c:         PK677-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
tech-c:         RADA-RIPE
mnt-by:         INTERNET-CZ-MNT
created:        2002-09-24T10:40:59Z
last-modified:  2022-03-21T08:43:01Z
source:         RIPE
abuse-c:        ICZ-RIPE
abuse-org:      ORG-ICa1-RIPE

organisation:   ORG-ICa1-RIPE
org-name:       INTERNET CZ, a.s.
country:        CZ
org-type:       LIR
address:        Ktis 2
address:        38403
address:        Ktis
address:        CZECH REPUBLIC
phone:          +420 383835353
fax-no:         +420 383835354
admin-c:        SC279-RIPE
admin-c:        ES4377-RIPE
admin-c:        RADA-RIPE
mnt-ref:        INTERNET-CZ-MNT
mnt-ref:        RIPE-NCC-HM-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         INTERNET-CZ-MNT
abuse-c:        ICZ-RIPE
created:        2004-04-17T11:04:30Z
last-modified:  2021-09-17T09:21:41Z
source:         RIPE

person:         Erich Syrovatka
address:        INTERNET CZ, a.s.
address:        Ktis 2
address:        Ktis
address:        384 03
address:        CZ
phone:          +420 383835353
nic-hdl:        ES4377-RIPE
mnt-by:         INTERNET-CZ-MNT
created:        2007-12-11T09:18:22Z
last-modified:  2017-10-30T21:57:50Z
source:         RIPE

person:         Petr Kolonicz
address:        INTERNET CZ,a.s.
address:        Ktis2
address:        Ktis
address:        38403
address:        cz
phone:          +420 383835353
nic-hdl:        PK677-RIPE
mnt-by:         INTERNET-CZ-MNT
created:        2002-04-25T05:53:44Z
last-modified:  2017-10-30T21:45:40Z
source:         RIPE

person:         Michal Rada
address:        FORPSI INTERNET CZ, a.s. Ktis 2 384 03 Ktis Czech Republic
phone:          +420 383835353
nic-hdl:        RADA-RIPE
mnt-by:         RADA-RIPE-MNT
created:        2010-04-19T09:47:37Z
last-modified:  2017-10-30T22:09:12Z
source:         RIPE
Get all this data and more in JSON format using our ASN API Read More

Hosted Domains

There are 332,666 domain names hosted across 5,838 IP addresses on this ASN.

IP Address Domain Domains on this IP 177,553 19,180 11,714 7,483 7,177 6,416 5,844 5,769 5,477 4,137 3,885 3,533 3,447 3,310 2,115 1,474 1,394 1,270 1,268 1,203 1,142 1,065 1,019 975 960 958 926 911 895 892 876 809 779 777 719 672 600 588 583 582 580 579 573 549 548 519 479 479 469 427

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity


There are 18 peers for this ASN.

Peers Name
AS1239 Sprint
AS16019 Vodafone Czech Republic a.s.
AS174 Cogent Communications
AS19905 NeuStar, Inc.
AS24482 SG.GS
AS2852 CESNET z.s.p.o.
AS29504 Freenet Liberec, z.s.
AS40994 Hohl IT e.U.
AS4455 IX Reach Ltd
AS51185 Onecom Global Communications LTD
AS57463 NetIX Communications JSC
AS60501 Sirius Technology SRL
AS6663 Euroweb Romania S.R.L.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
Get all this data and more in JSON format using our ASN API Read More


There are 5 upstreams for this ASN.

upstreams Name
AS1239 Sprint
AS16019 Vodafone Czech Republic a.s.
AS174 Cogent Communications
AS19905 NeuStar, Inc.
AS6939 Hurricane Electric LLC
Get all this data and more in JSON format using our ASN API Read More


There are no downstreams for this ASN.

Get all this data and more in JSON format using our ASN API Read More

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS24806 at robtex.

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