1. All IP Ranges
  2. 81.0.0.0/8
  3. 81.25.0.0/16
  4. AS57728  | 81.25.24.0/21

81.25.24.0/21

AS57728  ·  CEZNET s.r.o.

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

Summary

Country Czechia
Domain ceznet.cz
ASN AS57728
Registry RIPE
ID CEZNET

WHOIS Details

inetnum:        81.25.28.0 - 81.25.30.255
netname:        CEZNET
descr:          CER
country:        CZ
admin-c:        CH13482-RIPE
tech-c:         CH13482-RIPE
status:         ASSIGNED PA
mnt-by:         CEZNET-MNT
created:        2006-07-24T16:55:44Z
last-modified:  2025-09-16T13:21:19Z
source:         RIPE
abuse-email:    [email protected]
abuse-c:        CH13482-RIPE
abuse-org:      ORG-TBS13-RIPE

role:           CEZNET hostmaster
address:        CEZNET s.r.o.
address:        Vilemovska 1602
address:        Tachov
address:        347 01
address:        The Czech Republic
e-mail:         [email protected]
abuse-mailbox:  [email protected]
phone:          +420 211 046 699
admin-c:        MV6352-RIPE
tech-c:         KD4331-RIPE
tech-c:         MJ83172-RIPE
nic-hdl:        CH13482-RIPE
mnt-by:         CEZNET-MNT
created:        2024-01-12T08:23:53Z
last-modified:  2024-01-12T08:25:01Z
source:         RIPE

route:          81.25.24.0/21
origin:         AS57728
descr:          CEZNET s.r.o.
descr:          CER
mnt-by:         CEZNET-MNT
created:        2020-04-09T07:53:28Z
last-modified:  2025-09-16T11:37:08Z
source:         RIPE

Nearby Ranges

BGP prefixes that overlap with 81.25.0.0/16

Range ASN Company Num of IPs
81.25.208.0/20 AS39478 ASFINAG 4,096
81.25.240.0/20 AS51504 AS Telset 4,096
81.25.128.0/20 AS41589 Lux Green Technologies Sarl 4,096
81.25.96.0/20 AS60409 Associazione Vedica 4,096
81.25.192.0/20 AS2914 NTT United Kingdom Ltd 4,096
81.25.160.0/20 AS15943 wilhelm.tel GmbH 4,096
81.25.144.0/20 AS59702 Junet AB 4,096
81.25.224.0/20 AS15595 Skyline Electronics Ltd. 4,096
81.25.176.0/20 AS20963 P/F 20.11.19 4,096
81.25.0.0/20 AS24789 PJSC Rostelecom 4,096
81.25.40.0/21 AS60273 Altanetica S.L. 2,048
81.25.80.0/21 AS39078 GDM Konsult AB 2,048
81.25.32.0/21 AS60273 Altanetica S.L. 2,048
81.25.64.0/22 AS60720 KVIKTEL LLC 1,024
81.25.72.0/22 AS208496 Daily Telecom Mobile s.r.l. 1,024
81.25.76.0/22 AS31257 LIR Limited 1,024
81.25.76.0/23 AS31257 Orion Telecom LLC 512
81.25.78.0/23 AS31257 Orion Telecom LLC 512
81.25.118.0/24 AS41541 swhosting.com 256
81.25.119.0/24 AS41541 swhosting.com 256
81.25.120.0/24 AS41541 swhosting.com 256
81.25.121.0/24 AS41541 swhosting.com 256
81.25.122.0/24 AS41541 swhosting.com 256
81.25.123.0/24 AS41541 swhosting.com 256
81.25.124.0/24 AS41541 swhosting.com 256
81.25.125.0/24 AS41541 swhosting.com 256
81.25.126.0/24 AS41541 swhosting.com 256
81.25.127.0/24 AS41541 swhosting.com 256
81.25.115.0/24 AS41541 swhosting.com 256
81.25.71.0/24 AS47204 MCS LLC 256
81.25.68.0/24 AS47247 Maximum LLC 256
81.25.113.0/24 AS41541 swhosting.com 256
81.25.69.0/24 AS202376 Arvid Logicum OU 256
81.25.70.0/24 AS202104 Server-plus LLC 256
81.25.116.0/24 AS41541 swhosting.com 256
81.25.228.0/24 AS15595 Skyline ISP 256
81.25.117.0/24 AS41541 swhosting.com 256

Hosted domains

There are 31 domain names hosted across 10 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP
81.25.31.235 itlc-group.cz 12
81.25.28.84 century.cz 5
81.25.29.229 chlas.cz 4
81.25.27.204 flirtgo.cz 4
81.25.31.243 experimentalcabaret.com 2
81.25.29.245 ojuza.cz 1
81.25.28.78 experimentalcabaret.cz 1
81.25.31.7 hpshare.cz 1
81.25.26.4 st-software-ftp.com 1
81.25.26.2 st-software.com 1

Hosted domains API

Our Hosted Domains API, or Reverse IP API returns a full list of domains that are hosted on a single IP address.
Useful for Cybersecurity
Read more

Pingable IPs

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

IP Address ASN Details
81.25.27.65 AS57728 CEZNET s.r.o. 2.60ms from Prague, CZ
81.25.31.225 AS57728 CEZNET s.r.o. 2.46ms from Prague, CZ
81.25.29.161 AS57728 CEZNET s.r.o. 2.46ms from Prague, CZ
81.25.26.33 AS57728 CEZNET s.r.o. 2.61ms from Prague, CZ
81.25.25.30 AS57728 CEZNET s.r.o. 3.19ms from Prague, CZ
81.25.28.0 AS57728 CEZNET s.r.o. 2.43ms from Prague, CZ
81.25.30.65 AS57728 CEZNET s.r.o. 2.48ms 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
73.17.71.5 AS7922 Comcast Cable Communications, LLC 9.91ms from Boston, US
181.99.97.69 AS7303 Telecom Argentina S.A. 1.69ms from Buenos Aires, AR
184.166.126.85 AS33588 Charter Communications LLC 8.49ms from Denver, US
5.80.117.149 AS2856 British Telecommunications PLC 8.90ms from Erith, GB
23.12.221.85 AS9498 BHARTI Airtel Ltd. 1.07ms from Hyderabad, IN
31.155.145.165 AS8386 Vodafone Net Iletisim Hizmetler AS 9.12ms from Istanbul, TR
90.250.61.5 AS5378 Vodafone Limited 8.17ms from London, GB
213.252.66.85 AS5523 CREDO TELECOM 0.67ms from Moscow, RU
5.175.55.101 AS29419 Almaviva S.p.A. 0.99ms from Rome, IT
79.3.9.85 AS3269 Telecom Italia S.p.A. 4.75ms from Rome, IT
87.228.35.101 AS49505 JSC Selectel 1.04ms from Saint Petersburg, RU
139.229.110.133 AS19226 NSF'S NOIRLAB 11.01ms from Santiago, CL
73.221.190.197 AS7922 Comcast Cable Communications, LLC 8.52ms from Seattle, US
152.165.112.117 AS2527 Sony Network Communications Inc. 0.89ms from Tokyo, JP
99.85.94.53 AS7018 AT&T Enterprises, LLC 7.50ms from Atlanta, US
49.4.13.5 AS55990 Huawei Cloud Service data center 3.49ms from Beijing, CN
81.208.207.85 AS14544 Oracle Corporation 6.07ms from Belgrade, RS
190.24.98.69 AS19429 ETB - Colombia 0.73ms from Bogota, CO
72.70.85.229 AS701 Verizon Business 8.75ms from Boston, US
84.168.245.149 AS3320 Deutsche Telekom AG 6.42ms from Duesseldorf, DE
217.253.205.101 AS3320 Deutsche Telekom AG 7.11ms from Frankfurt am Main, DE
139.94.217.101 AS397412 TACHUS INFRASTRUCTURE LLC 1.69ms from Houston, US
146.120.200.5 AS213624 Net Space LLC 10.76ms from Moscow, RU
114.143.135.229 AS17762 Tata Teleservices Maharashtra Ltd 0.49ms from Mumbai, IN
87.170.0.149 AS3320 Deutsche Telekom AG 4.31ms from Nuernberg, DE

Traceroute

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

$
traceroute -a -n -q1 -f3 81.25.31.177
traceroute to 81.25.31.177 (81.25.31.177): 64 hops max, 52 byte packets
4 [AS39791] 89.111.69.1 0.388 ms
7 [AS57728] 81.25.31.177 3.183 ms
Measurement taken from IPinfo ProbeNet in Prague, CZ
On

What are IP address ranges?

IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.

Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.

An API built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs