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 182
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 182 domain names hosted across 69 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
188.122.192.110 ███████ 4
188.122.212.40 ██████████ 4
81.25.27.204 █████████ 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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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
188.122.220.1 AS57728 CEZNET s.r.o. 4.36ms from Prague, CZ
188.122.200.1 AS57728 CEZNET s.r.o. 6.33ms from Prague, CZ
188.122.219.129 AS57728 CEZNET s.r.o. 4.56ms from Prague, CZ
109.234.45.33 AS57728 CEZNET s.r.o. 1.91ms from Prague, CZ
188.122.192.233 AS57728 CEZNET s.r.o. 4.27ms from Prague, CZ
2a00:1800:0:ffff::f3 AS57728 CEZNET s.r.o. 2.47ms from Prague, CZ
188.122.221.10 AS57728 CEZNET s.r.o. 4.35ms from Prague, CZ
2a0a:b6c0:8000::1 AS57728 CEZNET s.r.o. 4.42ms from Prague, CZ
185.255.119.1 AS57728 CEZNET s.r.o. 0.34ms from Prague, CZ
109.234.47.246 AS57728 CEZNET s.r.o. 1.74ms from Prague, CZ
2a00:1800:ff2:2::1 AS57728 CEZNET s.r.o. 2.84ms from Prague, CZ
188.122.197.133 AS57728 CEZNET s.r.o. 4.29ms from Prague, CZ
81.25.25.30 AS57728 CEZNET s.r.o. 3.23ms from Prague, CZ
188.122.195.3 AS57728 CEZNET s.r.o. 5.63ms from Prague, CZ
188.122.223.225 AS57728 CEZNET s.r.o. 7.35ms from Prague, CZ
188.122.210.129 AS57728 CEZNET s.r.o. 3.61ms from Prague, CZ
81.25.26.1 AS57728 CEZNET s.r.o. 2.59ms from Prague, CZ
81.25.27.10 AS57728 CEZNET s.r.o. 2.62ms from Prague, CZ
109.234.41.33 AS57728 CEZNET s.r.o. 1.82ms from Prague, CZ
188.122.203.255 AS57728 CEZNET s.r.o. 3.58ms from Prague, CZ
81.25.18.17 AS57728 CEZNET s.r.o. 1.83ms from Prague, CZ
81.25.22.161 AS57728 CEZNET s.r.o. 1.85ms from Prague, CZ
188.122.215.1 AS57728 CEZNET s.r.o. 4.33ms from Prague, CZ
2a00:1807:1:1511::1 AS57728 CEZNET s.r.o. 0.36ms from Prague, CZ
188.122.201.164 AS57728 CEZNET s.r.o. 4.39ms 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
40.87.68.48 AS8075 Microsoft Corporation 0.38ms from Ashburn, US
114.230.85.64 AS146966 China Telecom 14.44ms from Huai'an, CN
78.189.150.176 AS9121 Turk Telekomunikasyon Anonim Sirketi 2.10ms from Istanbul, TR
138.252.183.0 AS136816 PT Genz Media Utama 0.34ms from Jakarta, ID
92.241.155.0 AS21107 # BLIC.NET AS peering info 9.31ms from Ljubljana, SI
14.12.40.32 AS2516 KDDI CORPORATION 12.84ms from Osaka, JP
174.163.116.80 AS7922 Comcast Cable Communications, LLC 4.25ms from Atlanta, US
117.15.157.224 AS4837 CHINA UNICOM China169 Backbone 4.74ms from Beijing, CN
52.167.70.64 AS8075 Microsoft Corporation 0.19ms from Boydton, US
130.211.162.80 AS396982 Google LLC 0.14ms from Council Bluffs, US
87.157.159.80 AS3320 Deutsche Telekom AG 4.07ms from Frankfurt am Main, DE
47.195.113.128 AS5650 Frontier Communications of America, Inc. 9.05ms from Miami, US
173.20.150.240 AS30036 Mediacom Communications Corp 14.98ms from Minneapolis, US
3.96.96.48 AS16509 Amazon.com, Inc. 0.17ms from Montreal, CA
27.194.230.32 AS4837 CHINA UNICOM China169 Backbone 6.77ms from Qingdao, CN
151.84.12.16 AS1267 WIND TRE S.P.A. 4.10ms from Rome, IT
108.65.33.112 AS7018 AT&T Enterprises, LLC 4.26ms from San Antonio, US
110.45.58.0 AS10066 LG HelloVision Corp. 8.46ms from Seoul, KR
115.19.127.192 AS4766 Korea Telecom 7.76ms from Seoul, KR
211.148.100.224 AS17816 China Unicom IP network China169 Guangdong province 3.32ms from Shenzhen, CN
47.241.134.96 AS45102 Alibaba (US) Technology Co., Ltd. 0.96ms from Singapore, SG
96.55.2.0 AS6327 Shaw Communications 8.36ms from Vancouver, CA
185.53.153.192 AS201661 PRZEDSIEBIORSTWO AJC 2 S.C. OZGA ADAM, KUBALA JAROSLAW, OZGA KONRAD 5.60ms from Warsaw, PL
83.22.222.176 AS5617 Orange Polska Spolka Akcyjna 6.59ms from Warsaw, PL
76.181.67.144 AS10796 Charter Communications Inc 13.00ms from Columbus, US

Traceroute

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

$
traceroute -a -n -q1 -f3 188.122.196.241
traceroute to 188.122.196.241 (188.122.196.241): 64 hops max, 52 byte packets
4 [AS39791] 89.111.64.25 1.462 ms
6 *
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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