Autonomous System details

AS25424

CEZNET s.r.o.  ·  internext.cz

Czechia

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AS25424 – CEZNET s.r.o.

Field Value
Country Czechia
Website internext.cz
Hosted domains 758
IPv4 addresses 33,792
IPv6 addresses 1,267,650,600,228,229,401,496,703,205,376
ASN type ISP
Registry ripe
Allocated 23 years ago on Nov 19, 2002
Updated a month ago on Oct 27, 2025

IP Ranges

Netblock Company Num of IPs
77.92.192.0/19 CEZNET s.r.o. 8,192
85.92.32.0/19 CEZNET s.r.o. 8,192
212.111.0.0/19 CEZNET s.r.o. 8,192
188.244.48.0/20 CEZNET s.r.o. 4,096
37.9.192.0/21 CEZNET s.r.o. 2,048
91.109.32.0/21 CEZNET s.r.o. 2,048
185.157.196.0/22 CEZNET s.r.o. 1,024
Netblock Company
2a00:e580::/29 CEZNET s.r.o.
2a0a:3340::/29 CEZNET s.r.o.
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WHOIS Details

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                                                ASHandle:       AS25424
                                                OrgID:          AS25424
                                                ASName:         AS25424
                                                ASNumber:       AS25424
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 758 domain names hosted across 132 IP addresses on this ASN.

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IP Address Domain Domains on this IP
212.111.31.83 █████████ 62
212.111.1.17 ██████████ 56
212.111.1.21 ██████████ 51
212.111.1.42 ██████████ 42
188.244.63.62 █████████ 37
212.111.2.145 ████████ 34
212.111.31.209 ██████████ 34
212.111.1.36 ██████████ 26
212.111.27.36 █████████ 25
212.111.1.19 ██████████ 20

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Peers

There are 27 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS14840 BR.Digital Telecom
AS174 Cogent Communications, LLC
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS198150 SIACOM JSC
AS211137 ISP Services spol. s.r.o.,
AS212483 LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS24482 SG.GS
AS29504 Freenet Liberec, z.s.
AS32590 Valve Corporation
AS36236 NetActuate, Inc
AS39120 Convergenze S.p.A.
AS39791 Telco Pro Services, a. s.
AS40994 Hohl IT e.U.
AS4455 IX Reach Ltd
AS49544 i3D.net B.V
AS49580 Monet +, a.s.
AS53062 ALT | GRUPO BRASIL TECPAR
AS5405 Inter.link GmbH
AS57463 NetIX Communications JSC
AS6204 INTERKVM HOST SRL
AS6461 Zayo Bandwidth
AS6663 Euroweb Romania S.R.L.
AS6740 CEZNET s.r.o.
AS6881 NIX.CZ z.s.p.o.
AS6939 Hurricane Electric LLC
AS8218 Zayo Infrastructure France SA
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Upstreams

There are 5 upstreams for this ASN.

upstreams Name
AS1299 Arelion Sweden AB
AS174 Cogent Communications, LLC
AS39791 Telco Pro Services, a. s.
AS6461 Zayo Bandwidth
AS6939 Hurricane Electric LLC
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Downstreams

There are 3 downstreams for this ASN.

Downstreams Name
AS211137 ISP Services spol. s.r.o.,
AS49580 Monet +, a.s.
AS6740 CEZNET s.r.o.
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ASN API & Database

Pingable IPs

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

IP Address ASN Details
91.109.39.1 AS25424 CEZNET s.r.o. 2.44ms from Bratislava, SK
212.111.22.1 AS25424 CEZNET s.r.o. 2.38ms from Bratislava, SK
77.92.201.1 AS25424 CEZNET s.r.o. 2.45ms from Bratislava, SK
212.111.5.26 AS25424 CEZNET s.r.o. 2.27ms from Bratislava, SK
2a00:e580:1090::1 AS25424 CEZNET s.r.o. 2.97ms from Bratislava, SK
212.111.31.115 AS25424 CEZNET s.r.o. 2.31ms from Bratislava, SK
212.111.12.1 AS25424 CEZNET s.r.o. 2.45ms from Bratislava, SK
212.111.0.29 AS25424 CEZNET s.r.o. 2.35ms from Bratislava, SK
2a00:e580:9::1 AS25424 CEZNET s.r.o. 3.02ms from Bratislava, SK
188.244.57.254 AS25424 CEZNET s.r.o. 5.12ms from Bratislava, SK
77.92.214.1 AS25424 CEZNET s.r.o. 2.43ms from Bratislava, SK
85.92.33.1 AS25424 CEZNET s.r.o. 2.45ms from Bratislava, SK
188.244.52.1 AS25424 CEZNET s.r.o. 2.44ms from Bratislava, SK
188.244.55.129 AS25424 CEZNET s.r.o. 2.83ms from Bratislava, SK
2a00:e580:1020::208 AS25424 CEZNET s.r.o. 2.41ms from Bratislava, SK
77.92.218.1 AS25424 CEZNET s.r.o. 2.49ms from Bratislava, SK
2a00:e580:244:1::1 AS25424 CEZNET s.r.o. 3.08ms from Bratislava, SK
85.92.55.1 AS25424 CEZNET s.r.o. 2.47ms from Bratislava, SK
85.92.57.1 AS25424 CEZNET s.r.o. 2.48ms from Bratislava, SK
37.9.192.1 AS25424 CEZNET s.r.o. 2.48ms from Bratislava, SK
212.111.9.1 AS25424 CEZNET s.r.o. 2.41ms from Bratislava, SK
212.111.3.14 AS25424 CEZNET s.r.o. 2.38ms from Bratislava, SK
77.92.193.1 AS25424 CEZNET s.r.o. 2.42ms from Bratislava, SK
77.92.210.1 AS25424 CEZNET s.r.o. 2.39ms from Bratislava, SK
77.92.194.1 AS25424 CEZNET s.r.o. 2.49ms from Bratislava, SK

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
172.173.142.192 AS8075 Microsoft Corporation 0.38ms from Ashburn, US
50.27.59.48 AS19108 Optimum 19.89ms from Dallas, US
91.14.4.240 AS3320 Deutsche Telekom AG 5.55ms from Frankfurt am Main, DE
154.220.63.112 AS132839 POWER LINE DATACENTER 1.06ms from Hong Kong, HK
73.166.37.208 AS7922 Comcast Cable Communications, LLC 4.15ms from Houston, US
3.11.206.144 AS16509 Amazon.com, Inc. 0.16ms from London, GB
18.169.234.48 AS16509 Amazon.com, Inc. 0.19ms from London, GB
176.255.92.176 AS5607 Sky UK Limited 3.58ms from London, GB
27.4.228.80 AS17488 Hathway IP Over Cable Internet 1.69ms from Saint Thomas Mount, IN
115.1.234.144 AS4766 Korea Telecom 2.69ms from Seoul, KR
175.180.102.32 AS4780 Digital United Inc. 6.21ms from Taipei, TW
126.8.124.176 AS17676 SoftBank Corp. 4.43ms from Tokyo, JP
141.138.15.160 AS212550 Sedmi Odjel d.o.o. 0.88ms from Zagreb, HR
54.200.111.144 AS16509 Amazon.com, Inc. 0.17ms from Boardman, US
72.128.67.112 AS10796 Charter Communications Inc 6.03ms from Chicago, US
111.2.130.96 AS56041 China Mobile communications corporation 8.07ms from Hangzhou, CN
67.240.52.0 AS11351 Charter Communications Inc 12.27ms from New York City, US
80.138.211.160 AS3320 Deutsche Telekom AG 6.21ms from Nuernberg, DE
87.29.223.0 AS3269 Telecom Italia S.p.A. 9.21ms from Rome, IT
93.152.167.112 AS8866 Vivacom Bulgaria EAD 0.91ms from Sofia, BG
60.244.162.208 AS7482 Asia Pacific On-line Service Inc. 5.26ms from Taipei, TW
185.210.148.16 AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH 0.61ms from Vienna, AT
31.215.123.0 AS5384 Emirates Internet 8.86ms from Al Fujairah City, AE
52.14.10.128 AS16509 Amazon.com, Inc. 0.15ms from Columbus, US
113.165.25.176 AS45899 VNPT Corp 2.69ms from Da Nang, VN

Traceroute

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

$
traceroute -a -n -q1 212.111.11.1
traceroute to 212.111.11.1 (212.111.11.1): 64 hops max, 52 byte packets
2 [] 194.30.187.69 3.256 ms
3 [AS25424] 212.111.11.1 2.574 ms
Measurement taken from IPinfo ProbeNet in Bratislava, SK
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 AS25424 at robtex.

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