AS2852 CESNET z.s.p.o.
AS2852 (CESNET2) is registered to CESNET z.s.p.o. in CZ. It originates 27 prefixes in the global routing table.
Who holds AS2852
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS2852 announces
Prefixes originated by AS2852 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
RPKI valid RPKI invalid no ROA covers it
Who AS2852 is reached through
The AS just before AS2852 in the paths our looking glass collectors hold, for 27 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
Provider authorization
AS2852 publishes an ASPA naming these providers. 2 ASes name it as a provider in theirs. Check a path.
The 2 ASes that name AS2852 as a provider
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
| Source | as-name | Maintained by |
|---|---|---|
| RADB | CESNET | MAINT-AS2852 |
| RIPE | CESNET2 | RIPE-NCC-END-MNT, AS2852-MNT |
Route objects with origin AS2852: RIPE 28 · RADB 27