AS number 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 745
Number of IPv4 33,792
Number of IPv6 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 19 days ago on Oct 07, 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 745 domain names hosted across 129 IP addresses on this ASN.

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IP Address Domain Domains on this IP
212.111.31.83 ████████ 60
212.111.1.17 ██████████ 57
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 ██████████ 24
188.244.56.68 ██████████ 21

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Peers

There are 27 peers for this ASN.

Peers Name
AS1299 Arelion Sweden AB
AS14840 BR.Digital Provider
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
AS22356 Durand do Brasil Ltda
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.
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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Pingable IPs

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

IP Address ASN Details
2a00:e580:a200:12::1 AS25424 CEZNET s.r.o. 2.44ms from Bratislava, SK
212.111.2.174 AS25424 CEZNET s.r.o. 2.29ms from Bratislava, SK
85.92.43.1 AS25424 CEZNET s.r.o. 2.45ms from Bratislava, SK
188.244.62.1 AS25424 CEZNET s.r.o. 2.35ms from Bratislava, SK
91.109.39.1 AS25424 CEZNET s.r.o. 2.50ms from Bratislava, SK
212.111.1.10 AS25424 CEZNET s.r.o. 2.29ms from Bratislava, SK
85.92.49.1 AS25424 CEZNET s.r.o. 2.42ms from Bratislava, SK
212.111.6.1 AS25424 CEZNET s.r.o. 2.40ms from Bratislava, SK
77.92.196.1 AS25424 CEZNET s.r.o. 2.43ms from Bratislava, SK
2a00:e580:1090::1 AS25424 CEZNET s.r.o. 3.07ms from Bratislava, SK
2a00:e580:ac00:11::1 AS25424 CEZNET s.r.o. 2.45ms from Bratislava, SK
212.111.21.1 AS25424 CEZNET s.r.o. 2.40ms from Bratislava, SK
2a00:e580:a400:11::1 AS25424 CEZNET s.r.o. 2.44ms from Bratislava, SK
85.92.40.1 AS25424 CEZNET s.r.o. 2.43ms from Bratislava, SK
77.92.218.1 AS25424 CEZNET s.r.o. 2.58ms from Bratislava, SK
188.244.53.1 AS25424 CEZNET s.r.o. 2.44ms from Bratislava, SK
2a00:e580:aa12:a::1 AS25424 CEZNET s.r.o. 2.80ms from Bratislava, SK
212.111.24.1 AS25424 CEZNET s.r.o. 2.52ms from Bratislava, SK
188.244.50.1 AS25424 CEZNET s.r.o. 2.48ms from Bratislava, SK
77.92.215.1 AS25424 CEZNET s.r.o. 2.48ms from Bratislava, SK
85.92.36.1 AS25424 CEZNET s.r.o. 2.46ms from Bratislava, SK
77.92.219.1 AS25424 CEZNET s.r.o. 2.41ms from Bratislava, SK
212.111.0.12 AS25424 CEZNET s.r.o. 2.31ms from Bratislava, SK
91.109.38.1 AS25424 CEZNET s.r.o. 2.47ms from Bratislava, SK
212.111.5.26 AS25424 CEZNET s.r.o. 2.28ms 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
44.237.62.16 AS16509 Amazon.com, Inc. 0.15ms from Boardman, US
102.44.22.176 AS8452 TE-AS 6.59ms from Cairo, EG
162.206.140.176 AS7018 AT&T Enterprises, LLC 18.96ms from Chicago, US
136.115.28.240 AS396982 Google LLC 0.12ms from Council Bluffs, US
115.197.175.192 AS4134 CHINANET-BACKBONE 5.19ms from Hangzhou, CN
174.140.18.192 AS25019 Saudi Telecom Company JSC 4.07ms from Jeddah, SA
105.224.30.0 AS37457 Telkom SA Ltd. 2.93ms from Johannesburg, ZA
2.97.15.160 AS13285 TalkTalk Communications Limited 3.39ms from London, GB
88.11.232.128 AS3352 TELEFONICA DE ESPANA S.A.U. 8.20ms from Madrid, ES
175.37.225.192 AS4804 Microplex PTY LTD 5.47ms from Melbourne, AU
119.238.74.208 AS2518 BIGLOBE Inc. 2.79ms from Osaka, JP
179.101.252.112 AS26599 TELEFÔNICA BRASIL S.A 4.39ms from Osasco, BR
45.161.232.16 AS268478 WebMais Internet 0.74ms from Osasco, BR
181.219.222.112 AS28573 Claro NXT Telecomunicacoes Ltda 14.34ms from Rio de Janeiro, BR
116.32.43.208 AS17858 LG POWERCOMM 1.95ms from Seoul, KR
110.92.9.48 AS38652 Ginzado Co.,Ltd. 8.94ms from Tokyo, JP
123.12.239.240 AS4837 CHINA UNICOM China169 Backbone 5.72ms from Zhengzhou, CN
20.54.164.176 AS8075 Microsoft Corporation 0.26ms from Amsterdam, NL
5.54.1.144 AS3329 VODAFONE-PANAFON HELLENIC TELECOMMUNICATIONS COMPANY SA 1.54ms from Athens, GR
54.186.23.176 AS16509 Amazon.com, Inc. 0.12ms from Boardman, US
174.108.7.160 AS11426 Charter Communications Inc 4.36ms from Charlotte, US
65.185.164.240 AS10796 Charter Communications Inc 11.02ms from Columbus, US
87.152.219.96 AS3320 Deutsche Telekom AG 4.46ms from Duesseldorf, DE
83.186.104.176 AS1257 Tele2 Sverige AB 3.89ms from Falkenberg, SE
79.223.159.128 AS3320 Deutsche Telekom AG 4.30ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 91.109.37.1
traceroute to 91.109.37.1 (91.109.37.1): 64 hops max, 52 byte packets
2 [] 194.30.187.69 3.591 ms
3 [AS25424] 91.109.37.1 2.549 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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