Autonomous System

AS31246 O2 Czech Republic, a.s.

ISPActiveCzechiaRIPE

AS31246 (NETBOX-AS) is an ISP network operated by O2 Czech Republic, a.s. in Czechia, registered with RIPE. It has 5 IPv4 prefixes with 66,560 addresses and 2 IPv6 prefixes, which makes it the 3,297th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses66,560in 5 prefixes
IPv6 prefixes2≈ 7.9 × 10²⁹ addresses
Size rank#3,297of 82,200 active ASNs
Abuser scoreVery Low0.05% of its addresses flagged · method

Details

OrganizationO2 Czech Republic, a.s.
AS nameNETBOX-AS
Websiteo2.cz
Country Czechia (CZ)
Network typeISP
RegistryRIPE
Abuse contactabuse@o2.cz
Registered2004-03-30
Last updated2024-06-20

IPv4 prefixes

5 prefixes · 66,560 addresses
NetworkAddressesFirst – last address
83.240.0.0/1732,76883.240.0.0 – 83.240.127.255
95.82.128.0/1816,38495.82.128.0 – 95.82.191.255
46.39.160.0/198,19246.39.160.0 – 46.39.191.255
213.155.224.0/198,192213.155.224.0 – 213.155.255.255
185.51.240.0/221,024185.51.240.0 – 185.51.243.255

IPv6 prefixes

2 prefixes
  • 2a0a:cac0::/29
  • 2001:4cc8::/31

Query AS31246 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=AS31246&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS31246, with or without a key:

curl "https://api.ipapi.is/?q=83.240.0.1"

Other networks of O2 Czech Republic, a.s.

AS5610 O2 Czech Republic, a.s.2,327,808 IPv4 addressesAS42908 O2 Czech Republic, a.s.183,296 IPv4 addressesAS16246 O2 Czech Republic, a.s.133,120 IPv4 addressesAS12570 O2 Czech Republic, a.s.53,760 IPv4 addressesAS41046 O2 Czech Republic, a.s.53,248 IPv4 addressesAS29321 O2 Czech Republic, a.s.15,360 IPv4 addresses

Largest networks in Czechia

AS5610 O2 Czech Republic, a.s.2,327,808 IPv4 addressesAS16019 Vodafone Czech Republic a.s.1,210,368 IPv4 addressesAS13036 T-Mobile Czech Republic a.s.992,256 IPv4 addressesAS2852 CESNET z.s.p.o.858,112 IPv4 addressesAS44546 ALFA TELECOM s.r.o.527,616 IPv4 addressesAS2571 DHL Information Services (Europe) s.r.o438,528 IPv4 addresses