AS number 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 168
Number of IPv4 15,360
Number of IPv6 237,684,487,542,793,012,780,631,851,008
ASN type ISP
Registry ripe
Allocated 6 years ago on Oct 21, 2019
Updated 5 days ago on Sep 26, 2025

IP Ranges

Netblock Company Num of IPs
188.122.192.0/19 Magnalink, a.s. 8,192
109.234.40.0/21 CER 2,048
81.25.16.0/21 CER 2,048
81.25.24.0/21 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 168 domain names hosted across 67 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
109.234.40.198 ██████████ 11
188.122.212.8 ████████ 8
81.25.28.84 ██████████ 5
188.122.212.40 ████████ 4
188.122.192.110 █████████ 4
81.25.29.229 ████████ 4
81.25.31.235 ██████████ 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

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

IP Address ASN Details
188.122.209.4 AS57728 CEZNET s.r.o. 2.72ms from Prague, CZ
188.122.200.1 AS57728 CEZNET s.r.o. 3.10ms from Prague, CZ
81.25.19.73 AS57728 CEZNET s.r.o. 1.80ms from Prague, CZ
2a00:1800:1:5::1 AS57728 CEZNET s.r.o. 3.24ms from Prague, CZ
188.122.202.202 AS57728 CEZNET s.r.o. 2.75ms from Prague, CZ
188.122.221.1 AS57728 CEZNET s.r.o. 2.77ms from Prague, CZ
188.122.196.98 AS57728 CEZNET s.r.o. 1.31ms from Prague, CZ
188.122.222.65 AS57728 CEZNET s.r.o. 0.33ms from Prague, CZ
188.122.192.201 AS57728 CEZNET s.r.o. 2.71ms from Prague, CZ
81.25.16.193 AS57728 CEZNET s.r.o. 1.83ms from Prague, CZ
188.122.223.225 AS57728 CEZNET s.r.o. 4.08ms from Prague, CZ
81.25.22.161 AS57728 CEZNET s.r.o. 1.88ms from Prague, CZ
81.25.18.217 AS57728 CEZNET s.r.o. 1.84ms from Prague, CZ
109.234.45.17 AS57728 CEZNET s.r.o. 1.91ms from Prague, CZ
185.255.116.218 AS57728 CEZNET s.r.o. 0.30ms from Prague, CZ
188.122.195.2 AS57728 CEZNET s.r.o. 2.37ms from Prague, CZ
188.122.203.255 AS57728 CEZNET s.r.o. 0.33ms from Prague, CZ
188.122.220.1 AS57728 CEZNET s.r.o. 2.80ms from Prague, CZ
81.25.17.105 AS57728 CEZNET s.r.o. 1.86ms from Prague, CZ
185.255.118.30 AS57728 CEZNET s.r.o. 0.42ms from Prague, CZ
2a00:1807:6:2601::1 AS57728 CEZNET s.r.o. 0.65ms from Prague, CZ
2a00:1800:0:ffff::f1 AS57728 CEZNET s.r.o. 1.78ms from Prague, CZ
109.234.41.57 AS57728 CEZNET s.r.o. 1.82ms from Prague, CZ
188.122.216.165 AS57728 CEZNET s.r.o. 2.73ms from Prague, CZ
185.255.119.2 AS57728 CEZNET s.r.o. 0.34ms 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
188.79.131.240 AS12479 Orange Espagne SA 16.56ms from Barcelona, ES
98.110.201.144 AS701 Verizon Business 1.26ms from Boston, US
179.127.167.240 AS28343 UNIFIQUE TELECOMUNICACOES S/A 7.55ms from Chapeco, BR
201.29.104.144 AS7738 V tal 15.13ms from Fortaleza, BR
20.208.7.128 AS8075 Microsoft Corporation 0.20ms from Kloten, CH
23.100.110.0 AS8075 Microsoft Corporation 0.17ms from Osaka, JP
90.30.125.208 AS3215 Orange S.A. 18.22ms from Paris, FR
34.32.98.144 AS396982 Google LLC 9.32ms from Warsaw, PL
188.63.9.48 AS3303 Swisscom (Switzerland) Ltd 0.62ms from Zuerich, CH
20.160.108.0 AS8075 Microsoft Corporation 0.23ms from Amsterdam, NL
24.176.118.0 AS20115 Charter Communications LLC 19.82ms from Atlanta, US
75.40.98.0 AS7018 AT&T Enterprises, LLC 18.20ms from Dallas, US
84.144.251.144 AS3320 Deutsche Telekom AG 6.76ms from Frankfurt am Main, DE
121.230.239.128 AS4134 CHINANET-BACKBONE 8.19ms from Huai'an, CN
102.213.127.16 AS328631 TWC Hosting CC 7.19ms from Johannesburg, ZA
78.105.53.32 AS5607 Sky UK Limited 2.34ms from London, GB
93.88.115.32 AS13113 ISI Line srl 4.19ms from Milan, IT
82.190.55.96 AS3269 Telecom Italia S.p.A. 18.68ms from Milan, IT
202.157.238.16 AS9354 Community Network Center Inc. 4.28ms from Osaka, JP
47.119.155.112 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.46ms from Shenzhen, CN
189.68.185.96 AS27699 TELEFÔNICA BRASIL S.A 2.27ms from São Paulo, BR
178.89.236.160 AS9198 JSC Kazakhtelecom 2.30ms from Almaty, KZ
72.74.189.128 AS701 Verizon Business 2.04ms from Boston, US
45.52.254.112 AS5650 Frontier Communications of America, Inc. 17.39ms from Chicago, US
66.91.186.80 AS20001 Charter Communications Inc 11.93ms from Honolulu, US

Traceroute

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

$
traceroute -a -n -q1 -f2 188.122.192.213
traceroute to 188.122.192.213 (188.122.192.213): 64 hops max, 52 byte packets
4 [AS39791] 89.111.69.1 0.431 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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