Autonomous System details

AS57728

CEZNET s.r.o.  ·  ceznet.cz

Czechia

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AS57728 – CEZNET s.r.o.

Field Value
Country Czechia
Website ceznet.cz
Hosted domains 181
IPv4 addresses 15,360
IPv6 addresses 237,684,487,542,793,012,780,631,851,008
ASN type ISP
Registry ripe
Allocated 6 years ago on Oct 21, 2019
Updated 3 months ago on Sep 26, 2025

IP Ranges

Netblock Company Num of IPs
188.122.192.0/19 Magnalink, a.s. 8,192
81.25.16.0/21 CER 2,048
81.25.24.0/21 CER 2,048
109.234.40.0/21 CER 2,048
185.255.116.0/22 CEZNET s.r.o. 1,024
Netblock Company
2a00:1800::/32 CEZNET s.r.o.
2a00:1807::/32 CER
2a0a:b6c0::/32 Magnalink, a.s.
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WHOIS Details

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                                                ASHandle:       AS57728
                                                OrgID:          AS57728
                                                ASName:         AS57728
                                                ASNumber:       AS57728
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 181 domain names hosted across 68 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.25.16.230 ████████ 20
188.122.202.244 ██████████ 18
188.122.212.135 ████████ 13
81.25.31.235 ██████████ 12
109.234.40.198 ███████ 11
188.122.212.8 ██████████ 8
81.25.28.84 ██████████ 5
81.25.29.229 ████████ 4
188.122.192.110 █████████ 4
188.122.212.40 ██████████ 4

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Peers

There is 1 peer for this ASN.

Peers Name
AS39791 Telco Pro Services, a. s.
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS39791 Telco Pro Services, a. s.
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

60 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
2a00:1807:6::1 AS57728 CEZNET s.r.o. 0.66ms from Prague, CZ
109.234.46.1 AS57728 CEZNET s.r.o. 1.86ms from Prague, CZ
109.234.47.246 AS57728 CEZNET s.r.o. 1.75ms from Prague, CZ
2a00:1800:1021:1:211:32ff:fe85:5019 AS57728 CEZNET s.r.o. 4.22ms from Prague, CZ
188.122.214.1 AS57728 CEZNET s.r.o. 4.32ms from Prague, CZ
81.25.18.217 AS57728 CEZNET s.r.o. 1.79ms from Prague, CZ
81.25.27.65 AS57728 CEZNET s.r.o. 2.60ms from Prague, CZ
109.234.44.41 AS57728 CEZNET s.r.o. 1.85ms from Prague, CZ
185.255.116.218 AS57728 CEZNET s.r.o. 0.31ms from Prague, CZ
188.122.209.33 AS57728 CEZNET s.r.o. 4.29ms from Prague, CZ
81.25.22.1 AS57728 CEZNET s.r.o. 1.86ms from Prague, CZ
188.122.198.49 AS57728 CEZNET s.r.o. 4.33ms from Prague, CZ
185.255.119.2 AS57728 CEZNET s.r.o. 0.36ms from Prague, CZ
188.122.222.57 AS57728 CEZNET s.r.o. 3.55ms from Prague, CZ
109.234.43.1 AS57728 CEZNET s.r.o. 4.14ms from Prague, CZ
81.25.31.225 AS57728 CEZNET s.r.o. 2.46ms from Prague, CZ
2a00:1800:ff0:32::1 AS57728 CEZNET s.r.o. 2.64ms from Prague, CZ
188.122.212.1 AS57728 CEZNET s.r.o. 4.37ms from Prague, CZ
188.122.210.129 AS57728 CEZNET s.r.o. 3.64ms from Prague, CZ
2a00:1807:7:2707::1 AS57728 CEZNET s.r.o. 0.63ms from Prague, CZ
188.122.218.1 AS57728 CEZNET s.r.o. 4.37ms from Prague, CZ
188.122.213.1 AS57728 CEZNET s.r.o. 4.29ms from Prague, CZ
188.122.202.202 AS57728 CEZNET s.r.o. 4.35ms from Prague, CZ
188.122.219.129 AS57728 CEZNET s.r.o. 4.50ms from Prague, CZ
188.122.201.2 AS57728 CEZNET s.r.o. 4.28ms from Prague, CZ

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
208.98.133.224 AS30530 Farmers Mutual Telephone Company 1.87ms from Boise, US
46.50.74.48 AS42863 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 9.33ms from Braga, PT
20.47.51.160 AS8069 Microsoft Corporation 1.96ms from Cape Town, ZA
173.190.107.128 AS7029 Windstream Communications LLC 10.60ms from Chicago, US
68.55.10.0 AS7922 Comcast Cable Communications, LLC 11.22ms from Flint, US
177.39.174.48 AS52768 Alsol Provedor de Internet Ltda 8.24ms from Fortaleza, BR
187.158.53.80 AS8151 UNINET 16.18ms from Los Angeles, US
194.207.85.112 AS12390 KCOM GROUP LIMITED 3.17ms from Manchester, GB
167.82.229.80 AS54113 Fastly, Inc. 0.05ms from Manila, PH
34.149.29.96 AS396982 Google LLC 0.08ms from Melbourne, AU
151.67.106.64 AS1267 WIND TRE S.P.A. 5.03ms from Milan, IT
79.224.146.224 AS3320 Deutsche Telekom AG 5.37ms from Nuernberg, DE
14.11.218.0 AS2516 KDDI CORPORATION 7.10ms from Osaka, JP
124.135.139.0 AS4837 CHINA UNICOM China169 Backbone 8.73ms from Qingdao, CN
73.163.33.144 AS7922 Comcast Cable Communications, LLC 7.15ms from Reston, US
211.108.184.160 AS9318 SK Broadband Co Ltd 1.54ms from Seoul, KR
210.152.81.160 AS4694 IDC Frontier Inc. 3.57ms from Tokyo, JP
52.218.217.96 AS16509 Amazon.com, Inc. 0.11ms from Boardman, US
148.71.221.128 AS12353 Vodafone Portugal 6.50ms from Lisbon, PT
217.181.194.176 AS8399 SEWAN SAS 0.56ms from Paris, FR
189.48.31.240 AS7738 V tal 11.80ms from Rio de Janeiro, BR
186.6.126.80 AS6400 Compañía Dominicana de Teléfonos S. A. 2.69ms from Santo Domingo, DO
14.9.105.0 AS2516 KDDI CORPORATION 10.30ms from Tokyo, JP
133.20.28.112 AS2907 Research Organization of Information and Systems, National Institute of Informatics 2.11ms from Tokyo, JP
60.0.96.192 AS4837 CHINA UNICOM China169 Backbone 7.97ms from Beijing, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 185.255.119.3
traceroute to 185.255.119.3 (185.255.119.3): 64 hops max, 52 byte packets
1 [AS209847] 2.56.176.1 2211.833 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
On

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 AS57728 at robtex.

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