Autonomous System

AS25424 CEZNET s.r.o.

ISPActiveCzechiaRIPE

AS25424 (INEXT-CZ) is an ISP network operated by CEZNET s.r.o. in Czechia, registered with RIPE. It has 7 IPv4 prefixes with 33,792 addresses and 2 IPv6 prefixes, which makes it the 5,161st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses33,792in 7 prefixes
IPv6 prefixes2≈ 1.3 × 10³⁰ addresses
Size rank#5,161of 82,200 active ASNs
Abuser scoreLow0.12% of its addresses flagged · method

Details

OrganizationCEZNET s.r.o.
AS nameINEXT-CZ
Websitecogentco.com
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@inext.cz
Registered2002-11-19
Last updated2026-08-07

IPv4 prefixes

7 prefixes · 33,792 addresses
NetworkAddressesFirst – last address
77.92.192.0/198,19277.92.192.0 – 77.92.223.255
85.92.32.0/198,19285.92.32.0 – 85.92.63.255
212.111.0.0/198,192212.111.0.0 – 212.111.31.255
188.244.48.0/204,096188.244.48.0 – 188.244.63.255
37.9.192.0/212,04837.9.192.0 – 37.9.199.255
91.109.32.0/212,04891.109.32.0 – 91.109.39.255
185.157.196.0/221,024185.157.196.0 – 185.157.199.255

IPv6 prefixes

2 prefixes
  • 2a00:e580::/29
  • 2a0a:3340::/29

Query AS25424 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS25424&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS25424, with or without a key:

curl "https://api.ipapi.is/?q=77.92.192.1"

Other networks of CEZNET s.r.o.

AS6740 CEZNET s.r.o.41,984 IPv4 addressesAS49101 CEZNET s.r.o.16,384 IPv4 addressesAS57728 CEZNET s.r.o.15,360 IPv4 addresses

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