Autonomous System
AS6740 CEZNET s.r.o.
ISPActiveCzechiaRIPE
AS6740 (INEXT-CZ-ADA) is an ISP network operated by CEZNET s.r.o. in Czechia, registered with RIPE. It has 4 IPv4 prefixes with 41,984 addresses, which makes it the 4,655th largest of 82,200 active autonomous systems by IPv4 space.
IPv4 addresses41,984in 4 prefixes
IPv6 prefixes0none
Size rank#4,655of 82,200 active ASNs
Details
OrganizationCEZNET s.r.o.
AS nameINEXT-CZ-ADA
Websitecogentco.com
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactdohled@ceznet.cz
Registered2002-07-03
Last updated2025-10-07
IPv4 prefixes
4 prefixes · 41,984 addresses| Network | Addresses | First – last address |
|---|---|---|
| 82.202.0.0/18 | 16,384 | 82.202.0.0 – 82.202.63.255 |
| 213.235.64.0/18 | 16,384 | 213.235.64.0 – 213.235.127.255 |
| 212.90.224.0/19 | 8,192 | 212.90.224.0 – 212.90.255.255 |
| 185.193.128.0/22 | 1,024 | 185.193.128.0 – 185.193.131.255 |
82.202.0.0/18 213.235.64.0/18 212.90.224.0/19 185.193.128.0/22
IPv6 prefixes
No IPv6 prefixes.
Query AS6740 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=AS6740&key=YOUR_API_KEY"Any address in its prefixes resolves to AS6740, with or without a key:
curl "https://api.ipapi.is/?q=82.202.0.1"Other networks of CEZNET s.r.o.
AS25424 CEZNET s.r.o.33,792 IPv4 addressesAS49101 CEZNET s.r.o.16,384 IPv4 addressesAS57728 CEZNET s.r.o.15,360 IPv4 addresses
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