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 200
IPv4 addresses 15,360
IPv6 addresses 237,684,487,542,793,014,000,000,000,000
ASN type ISP
Registry ripe
Allocated 7 years ago on Oct 21, 2019
Updated 7 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 200 domain names hosted across 67 IP addresses on this ASN.

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IP Address Domain Domains on this IP
81.25.31.235 ██████████ 26
81.25.16.230 ██████████ 17
188.122.202.244 ██████████ 17
188.122.212.135 ██████████ 12
109.234.40.198 ██████████ 10
188.122.212.8 ██████████ 7
81.25.29.229 ██████████ 4
81.25.27.204 ██████████ 4
188.122.213.155 █████████ 4
188.122.192.110 ██████████ 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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ASN API & Database

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

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

IP Address ASN Details
2a00:1800:ff2:2::1 AS57728 CEZNET s.r.o. 2.82ms from Prague, CZ
188.122.219.129 AS57728 CEZNET s.r.o. 2.90ms from Prague, CZ
188.122.193.1 AS57728 CEZNET s.r.o. 7.49ms from Prague, CZ
81.25.29.161 AS57728 CEZNET s.r.o. 2.52ms from Prague, CZ
81.25.31.161 AS57728 CEZNET s.r.o. 2.56ms from Prague, CZ
188.122.203.255 AS57728 CEZNET s.r.o. 2.76ms from Prague, CZ
188.122.216.1 AS57728 CEZNET s.r.o. 2.60ms from Prague, CZ
188.122.223.129 AS57728 CEZNET s.r.o. 5.38ms from Prague, CZ
188.122.208.227 AS57728 CEZNET s.r.o. 2.48ms from Prague, CZ
109.234.46.1 AS57728 CEZNET s.r.o. 1.92ms from Prague, CZ
188.122.199.130 AS57728 CEZNET s.r.o. 4.87ms from Prague, CZ
188.122.210.129 AS57728 CEZNET s.r.o. 2.84ms from Prague, CZ
188.122.200.1 AS57728 CEZNET s.r.o. 5.44ms from Prague, CZ
188.122.218.1 AS57728 CEZNET s.r.o. 2.49ms from Prague, CZ
109.234.45.33 AS57728 CEZNET s.r.o. 1.97ms from Prague, CZ
185.255.118.30 AS57728 CEZNET s.r.o. 0.49ms from Prague, CZ
109.234.43.1 AS57728 CEZNET s.r.o. 4.19ms from Prague, CZ
188.122.197.249 AS57728 CEZNET s.r.o. 2.48ms from Prague, CZ
188.122.201.164 AS57728 CEZNET s.r.o. 2.52ms from Prague, CZ
2a00:1800:0:ffff::f3 AS57728 CEZNET s.r.o. 2.53ms from Prague, CZ
188.122.221.2 AS57728 CEZNET s.r.o. 2.60ms from Prague, CZ
188.122.213.1 AS57728 CEZNET s.r.o. 2.56ms from Prague, CZ
188.122.209.4 AS57728 CEZNET s.r.o. 2.47ms from Prague, CZ
188.122.211.149 AS57728 CEZNET s.r.o. 2.51ms from Prague, CZ
188.122.202.202 AS57728 CEZNET s.r.o. 2.53ms 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
207.255.87.64 AS11776 Breezeline 15.87ms from Ashburn, US
85.75.113.240 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.23ms from Athens, GR
118.174.50.176 AS23969 TOT Public Company Limited 7.12ms from Bangkok, TH
93.93.202.80 AS210785 KAPELAN Medien GmbH 4.25ms from Berlin, DE
98.34.87.64 AS7922 Comcast Cable Communications, LLC 4.85ms from Chicago, US
220.192.67.144 AS4837 CHINA UNICOM China169 Backbone 3.66ms from Chongqing, CN
20.113.30.160 AS8075 Microsoft Corporation 0.30ms from Frankfurt am Main, DE
217.160.180.16 AS8560 IONOS SE 2.65ms from Frankfurt am Main, DE
86.132.142.48 AS2856 British Telecommunications PLC 5.53ms from London, GB
193.91.44.0 AS15965 CEGECOM S.A. 0.81ms from Luxembourg, LU
212.183.214.64 AS6739 Vodafone ONO AS 9.52ms from Madrid, ES
185.53.192.208 AS200148 FIDOKA srl SB 11.36ms from Milan, IT
178.167.73.80 AS21453 Flex Ltd. 2.71ms from Moscow, RU
173.70.124.96 AS701 Verizon Business 1.96ms from New York City, US
20.99.255.64 AS8075 Microsoft Corporation 0.27ms from Quincy, US
76.114.32.16 AS7922 Comcast Cable Communications, LLC 10.24ms from Santa Clara, US
220.135.11.32 AS3462 Data Communication Business Group 2.05ms from Taichung, TW
14.8.48.128 AS2516 KDDI CORPORATION 5.06ms from Tokyo, JP
173.32.203.240 AS812 Rogers Communications Canada Inc. 0.90ms from Toronto, CA
23.210.192.48 AS16625 Akamai Technologies, Inc. 0.54ms from Boston, US
188.157.242.16 AS5483 Magyar Telekom Plc. 4.12ms from Budapest, HU
152.188.195.208 AS701 Verizon Business 1.15ms from Denver, US
52.158.30.128 AS8075 Microsoft Corporation 0.20ms from Dublin, IE
90.29.69.80 AS3215 Orange S.A. 6.70ms from Paris, FR
110.45.58.0 AS10066 LG HelloVision Corp. 8.43ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -f2 188.122.200.1
traceroute to 188.122.200.1 (188.122.200.1): 64 hops max, 52 byte packets
2 [] 91.210.16.186 1.237 ms
3 [AS39791] 89.111.64.25 0.717 ms
5 *
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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