AS2852 is CESNET z.s.p.o..
AS2852 belongs to CESNET z.s.p.o.. DB-IP Lite attributes 849,920 IPv4 addresses in 20 ranges and 1 IPv6 ranges to it, all or nearly all of the IPv4 space in Czechia. The number is registered with RIPE NCC in Czechia on 20 Dec 1993.
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)
CESNET z.s.p.o. 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 1 IPv6 ranges for AS2852, so customers can get IPv6 addresses, which databases place separately from IPv4.
Where its IPv4 space is used, according to DB-IP
Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.
IP ranges
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
- DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
- NRO RIR delegated-extended statistics · checked 4 Nov 2026