AS29321

O2 Czech Republic, a.s.

AS 29321 CentroNetAS

Autonomous Systems are networks typically governed by large ISPs that participate in global Internet routing. Each network is assigned a unique identification number known as the AS number or ASN by the Internet Assigned Numbers Authority.

15,360 IP addresses
ASN29321
NameCentroNetAS
OrganizationO2 Czech Republic, a.s.
CountryCzechia  
RegistryRIPE NCC
IPv4 addresses15,360
IPv6 /64 networks232
Prefixes6
Other ASN allocated to O2 Czech Republic, a.s.
ASN Name IP addresses
5610 O2-CZECH-REPUBLIC 2,328,320
42908 CZ-NORDICTELECOMREGIONAL 183,296
16246 AS16246 133,120
31246 NETBOX-AS 66,560
12570 ITSELF 53,760
41046 NEJTV-AS 53,248
49767 INTERNETPB-AS 5,120
44070 MCnet-AS 4,096
47681 RIOMEDIA 1,024
35214 CZ-NORDICTELECOMREGIONAL 0
25036 TERMSNET-AS 0
41824 IH-LOSAN-NET 0
20884 CZ-CTNET-AS 0
61169 SPORKNET 0
202522 CZ-NORDICTELECOMREGIONAL 0
IPv4 Prefixes for AS29321
Network Location Addresses
109.239.64.0/20 Centronet   Prague 4,096
194.59.240.0/22 O2 Czech Republic, a.s.   Aš 1,024
217.195.160.0/20 Centronet   New Town 4,096
80.243.96.0/20 Centronet   Prague 4,096
94.143.168.0/21 Centronet   New Town 2,048
IPv6 Prefixes for AS29321
Network Location /64 Prefixes
2a02:b20::/32 O2 Czech Republic, a.s.   Prague 232