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AS42908

AS42908 is O2 Czech Republic, a.s..

Last updated 5 Oct 2026 from DB-IP ASN Lite (2026-10-01) and RIR statistics (26 Oct 2026)

Short answer

AS42908 belongs to O2 Czech Republic, a.s.. DB-IP Lite attributes 183,296 IPv4 addresses in 35 ranges and 9 IPv6 ranges to it, all or nearly all of the IPv4 space in Czechia. The number is registered with RIPE NCC in Czechia on 9 May 2007.

Facts for AS42908
Operator (DB-IP)O2 Czech Republic, a.s.
IPv4 addresses183,296
IPv4 ranges35
IPv6 ranges9
RegistryRIPE NCC
Registered9 May 2007
Registry countryCzechia (CZ)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

O2 Czech Republic, a.s. hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 9 IPv6 ranges for AS42908, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

CZ100%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
5.102.48.0 – 5.102.63.2555.102.48.0/204,096
31.10.56.0 – 31.10.63.25531.10.56.0/212,048
45.159.116.0 – 45.159.119.25545.159.116.0/221,024
46.183.56.0 – 46.183.63.25546.183.56.0/212,048
46.231.72.0 – 46.231.79.25546.231.72.0/212,048
77.95.192.0 – 77.95.199.25577.95.192.0/212,048
78.136.128.0 – 78.136.191.25578.136.128.0/1816,384
80.78.136.0 – 80.78.139.25580.78.136.0/221,024
80.79.0.0 – 80.79.3.25580.79.0.0/221,024
80.87.176.0 – 80.87.191.25580.87.176.0/204,096
80.90.128.0 – 80.90.143.25580.90.128.0/204,096
80.243.236.0 – 80.243.239.25580.243.236.0/221,024
80.251.240.0 – 80.251.255.25580.251.240.0/204,096
88.81.64.0 – 88.81.95.25588.81.64.0/198,192
91.187.32.0 – 91.187.63.25591.187.32.0/198,192
92.61.80.0 – 92.61.95.25592.61.80.0/204,096
93.92.48.0 – 93.92.55.25593.92.48.0/212,048
93.93.32.0 – 93.93.39.25593.93.32.0/212,048
94.241.64.0 – 94.241.127.25594.241.64.0/1816,384
109.108.96.0 – 109.108.127.255109.108.96.0/198,192
176.102.128.0 – 176.102.159.255176.102.128.0/198,192
178.17.80.0 – 178.17.95.255178.17.80.0/204,096
185.78.12.0 – 185.78.15.255185.78.12.0/221,024
185.82.236.0 – 185.82.239.255185.82.236.0/221,024
185.108.60.0 – 185.108.63.255185.108.60.0/221,024
185.157.240.0 – 185.157.243.255185.157.240.0/221,024
188.119.96.0 – 188.119.99.255188.119.96.0/221,024
193.42.128.0 – 193.42.131.255193.42.128.0/221,024
193.107.252.0 – 193.107.255.255193.107.252.0/221,024
213.19.0.0 – 213.19.127.255213.19.0.0/1732,768
213.155.32.0 – 213.155.63.255213.155.32.0/198,192
213.250.192.0 – 213.250.255.255213.250.192.0/1816,384
217.170.96.0 – 217.170.111.255217.170.96.0/204,096
217.196.112.0 – 217.196.127.255217.196.112.0/204,096
217.197.144.0 – 217.197.159.255217.197.144.0/204,096
2a00:e4c0:: – 2a00:e4c0:ffff:ffff:ffff:ffff:ffff:ffff2a00:e4c0::/32IPv6
2a01:9f40:: – 2a01:9f47:ffff:ffff:ffff:ffff:ffff:ffff2a01:9f40::/29IPv6
2a02:2428:: – 2a02:2428:ffff:ffff:ffff:ffff:ffff:ffff2a02:2428::/32IPv6
2a02:2588:: – 2a02:258f:ffff:ffff:ffff:ffff:ffff:ffff2a02:2588::/29IPv6
2a03:1600:: – 2a03:1600:ffff:ffff:ffff:ffff:ffff:ffff2a03:1600::/32IPv6
2a03:7a00:: – 2a03:7a00:ffff:ffff:ffff:ffff:ffff:ffff2a03:7a00::/32IPv6
2a03:a820:: – 2a03:a820:ffff:ffff:ffff:ffff:ffff:ffff2a03:a820::/32IPv6
2a07:cc80:: – 2a07:cc87:ffff:ffff:ffff:ffff:ffff:ffff2a07:cc80::/29IPv6
2a0c:8b40:: – 2a0c:8b47:ffff:ffff:ffff:ffff:ffff:ffff2a0c:8b40::/29IPv6
Showing 35 of 35 IPv4 and 9 of 9 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 5 Oct 2026
  2. NRO RIR delegated-extended statistics · checked 27 Oct 2026