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 237,684,487,542,793,012,780,631,851,008
ASN type ISP
Registry ripe
Allocated 6 years ago on Oct 21, 2019
Updated 5 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 ██████████ 29
81.25.16.230 █████████ 19
188.122.202.244 ██████████ 18
188.122.212.135 ██████████ 13
109.234.40.198 ███████ 11
188.122.212.8 ██████████ 8
81.25.27.204 ██████████ 5
81.25.28.84 ██████████ 5
188.122.212.40 ████████ 4
188.122.212.121 ███████ 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
81.25.28.254 AS57728 CEZNET s.r.o. 2.52ms from Prague, CZ
2a00:1800:0:ffff::f3 AS57728 CEZNET s.r.o. 2.52ms from Prague, CZ
188.122.195.2 AS57728 CEZNET s.r.o. 5.61ms from Prague, CZ
2a0a:b6c0:0:8::1 AS57728 CEZNET s.r.o. 4.10ms from Prague, CZ
188.122.213.1 AS57728 CEZNET s.r.o. 4.09ms from Prague, CZ
188.122.207.2 AS57728 CEZNET s.r.o. 4.14ms from Prague, CZ
2a00:1800:1021::1 AS57728 CEZNET s.r.o. 3.52ms from Prague, CZ
185.255.116.158 AS57728 CEZNET s.r.o. 0.33ms from Prague, CZ
2a00:1800:1:2:: AS57728 CEZNET s.r.o. 4.98ms from Prague, CZ
81.25.18.137 AS57728 CEZNET s.r.o. 1.92ms from Prague, CZ
109.234.41.57 AS57728 CEZNET s.r.o. 1.89ms from Prague, CZ
81.25.27.1 AS57728 CEZNET s.r.o. 2.64ms from Prague, CZ
188.122.192.233 AS57728 CEZNET s.r.o. 4.06ms from Prague, CZ
188.122.211.233 AS57728 CEZNET s.r.o. 4.07ms from Prague, CZ
2a00:1807:6:2601::1 AS57728 CEZNET s.r.o. 0.71ms from Prague, CZ
188.122.220.1 AS57728 CEZNET s.r.o. 4.16ms from Prague, CZ
109.234.45.33 AS57728 CEZNET s.r.o. 1.99ms from Prague, CZ
188.122.198.49 AS57728 CEZNET s.r.o. 4.08ms from Prague, CZ
109.234.44.41 AS57728 CEZNET s.r.o. 1.97ms from Prague, CZ
188.122.202.202 AS57728 CEZNET s.r.o. 4.15ms from Prague, CZ
2a00:1800:ff2:2::1 AS57728 CEZNET s.r.o. 3.09ms from Prague, CZ
2a0a:b6c0:8000::1 AS57728 CEZNET s.r.o. 4.13ms from Prague, CZ
188.122.196.137 AS57728 CEZNET s.r.o. 4.09ms from Prague, CZ
81.25.31.161 AS57728 CEZNET s.r.o. 2.56ms from Prague, CZ
188.122.221.1 AS57728 CEZNET s.r.o. 4.21ms 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
64.239.50.0 AS395035 LiveOak Fiber 12.48ms from Atlanta, US
54.184.193.32 AS16509 Amazon.com, Inc. 0.20ms from Boardman, US
72.95.126.0 AS13977 Fidium 2.82ms from Boston, US
206.206.81.80 AS211439 Jurgita Jurgaitiene trading as LOCOTORPI 0.29ms from Budapest, HU
169.54.192.128 AS36351 IBM Cloud 0.86ms from Dallas, US
122.45.149.112 AS17858 LG POWERCOMM 1.85ms from Incheon, KR
182.45.255.16 AS4134 CHINANET-BACKBONE 4.52ms from Jinan, CN
86.1.162.144 AS5089 Virgin Media Limited 3.54ms from London, GB
2.32.219.80 AS30722 Fastweb SpA 2.82ms from Milan, IT
180.17.213.208 AS4713 NTT DOCOMO BUSINESS,Inc. 4.23ms from Osaka, JP
115.5.235.48 AS4766 Korea Telecom 1.98ms from Seoul, KR
2.18.53.80 AS33905 Akamai International B.V. 0.22ms from Sydney, AU
106.163.197.32 AS2516 KDDI CORPORATION 12.54ms from Tokyo, JP
153.161.9.80 AS4713 NTT DOCOMO BUSINESS,Inc. 3.25ms from Tokyo, JP
95.56.86.176 AS9198 JSC Kazakhtelecom 2.09ms from Almaty, KZ
52.39.64.208 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
98.25.8.112 AS11426 Charter Communications Inc 6.94ms from Charlotte, US
96.172.89.16 AS53297 Comcast Cable Communications, LLC 0.88ms from Chicago, US
187.173.236.192 AS8151 UNINET 18.20ms from Guadalajara, MX
217.181.194.176 AS8399 SEWAN SAS 0.62ms from Paris, FR
20.230.156.192 AS8075 Microsoft Corporation 0.30ms from Quincy, US
95.68.178.192 AS12389 PJSC Rostelecom 12.52ms from Samara, RU
95.83.10.160 AS12389 PJSC Rostelecom 8.73ms from Samara, RU
222.224.139.128 AS9595 NTT-ME Corporation 3.85ms from Tokyo, JP
59.88.175.16 AS9829 National Internet Backbone 12.11ms from Bengaluru, IN

Traceroute

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

$
traceroute -a -n -q1 188.122.211.226
traceroute to 188.122.211.226 (188.122.211.226): 64 hops max, 52 byte packets
2 *
3 [AS52263] 177.93.31.65 1.514 ms
4 *
5 [AS57728] 188.122.211.226 175.852 ms
Measurement taken from IPinfo ProbeNet in San Pedro, CR
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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