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
188.122.212.121 ████████ 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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Downstreams

There are no downstreams for this ASN.

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Pingable IPs

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

IP Address ASN Details
185.255.119.3 AS57728 CEZNET s.r.o. 0.38ms from Prague, CZ
188.122.196.137 AS57728 CEZNET s.r.o. 4.27ms from Prague, CZ
2a00:1807:1:2004::2 AS57728 CEZNET s.r.o. 0.37ms from Prague, CZ
188.122.214.129 AS57728 CEZNET s.r.o. 4.36ms from Prague, CZ
188.122.207.2 AS57728 CEZNET s.r.o. 4.31ms from Prague, CZ
2a00:1807:6::1 AS57728 CEZNET s.r.o. 0.63ms from Prague, CZ
109.234.43.2 AS57728 CEZNET s.r.o. 4.11ms from Prague, CZ
188.122.221.10 AS57728 CEZNET s.r.o. 4.34ms from Prague, CZ
188.122.211.129 AS57728 CEZNET s.r.o. 4.30ms from Prague, CZ
109.234.45.57 AS57728 CEZNET s.r.o. 1.87ms from Prague, CZ
81.25.30.65 AS57728 CEZNET s.r.o. 2.47ms from Prague, CZ
188.122.209.5 AS57728 CEZNET s.r.o. 4.29ms from Prague, CZ
81.25.26.1 AS57728 CEZNET s.r.o. 2.58ms from Prague, CZ
81.25.22.161 AS57728 CEZNET s.r.o. 1.86ms from Prague, CZ
2a0a:b6c0:8000::1 AS57728 CEZNET s.r.o. 4.33ms from Prague, CZ
81.25.29.161 AS57728 CEZNET s.r.o. 2.50ms from Prague, CZ
109.234.47.246 AS57728 CEZNET s.r.o. 1.74ms from Prague, CZ
188.122.202.2 AS57728 CEZNET s.r.o. 4.31ms from Prague, CZ
188.122.193.1 AS57728 CEZNET s.r.o. 8.27ms from Prague, CZ
2a00:1800:ff0:32::1 AS57728 CEZNET s.r.o. 2.60ms from Prague, CZ
188.122.198.49 AS57728 CEZNET s.r.o. 4.33ms from Prague, CZ
81.25.17.9 AS57728 CEZNET s.r.o. 1.83ms from Prague, CZ
81.25.28.0 AS57728 CEZNET s.r.o. 2.43ms from Prague, CZ
81.25.27.129 AS57728 CEZNET s.r.o. 2.58ms from Prague, CZ
81.25.25.30 AS57728 CEZNET s.r.o. 3.27ms 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
87.97.89.160 AS20845 DIGI Tavkozlesi es Szolgaltato Kft. 3.35ms from Budapest, HU
190.175.30.208 AS22927 Telefonica de Argentina 1.71ms from Buenos Aires, AR
178.132.166.32 AS8926 Moldtelecom SA 1.69ms from Chisinau, MD
90.242.228.208 AS5378 Vodafone Limited 5.04ms from Edinburgh, GB
90.195.229.144 AS5607 Sky UK Limited 4.10ms from Erith, GB
141.2.114.16 AS20633 Johann Wolfgang Goethe-Universitat Frankfurt am Main 0.62ms from Frankfurt am Main, DE
176.91.171.160 AS16135 Turkcell A.S. 16.67ms from Istanbul, TR
65.40.145.128 AS209 CenturyLink Communications, LLC 2.24ms from Las Vegas, US
88.208.239.48 AS8560 IONOS SE 3.90ms from London, GB
50.120.10.48 AS5650 Frontier Communications of America, Inc. 14.96ms from Los Angeles, US
63.197.205.48 AS7018 AT&T Enterprises, LLC 4.16ms from Los Angeles, US
108.86.9.0 AS7018 AT&T Enterprises, LLC 7.35ms from Miami, US
113.15.36.64 AS4134 CHINANET-BACKBONE 6.09ms from Nanning, CN
24.90.180.224 AS12271 Charter Communications Inc 4.77ms from New York City, US
101.140.132.80 AS17511 OPTAGE Inc. 2.71ms from Osaka, JP
179.208.174.32 AS28573 Claro NXT Telecomunicacoes Ltda 5.23ms from Osasco, BR
98.90.126.64 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
142.111.228.192 AS214238 HOST TELECOM LTD 0.11ms from Secaucus, US
43.200.40.0 AS16509 Amazon.com, Inc. 0.33ms from Seoul, KR
222.108.187.16 AS4766 Korea Telecom 1.25ms from Seoul, KR
121.155.103.144 AS4766 Korea Telecom 2.66ms from Seoul, KR
61.113.7.192 AS4713 NTT DOCOMO BUSINESS,Inc. 3.55ms from Tokyo, JP
119.36.116.32 AS4837 CHINA UNICOM China169 Backbone 16.93ms from Zhengzhou, CN
208.98.133.224 AS30530 Farmers Mutual Telephone Company 1.82ms from Boise, US
91.179.117.176 AS5432 Proximus NV 2.96ms from Brussels, BE

Traceroute

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

$
traceroute -a -n -q1 188.122.214.129
traceroute to 188.122.214.129 (188.122.214.129): 64 hops max, 52 byte packets
1 [AS15169] 142.251.248.129 272.442 ms
2 [AS15169] 192.178.99.18 272.227 ms
3 *
4 [AS39791] 89.111.122.34 245.221 ms
5 *
6 *
7 [AS39791] 89.111.70.251 250.453 ms
8 [AS57728] 188.122.214.129 249.783 ms
Measurement taken from IPinfo ProbeNet in Melbourne, AU
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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