AS204921 zhenyun sun
AS204921 (YunZheng-Network) is registered to zhenyun sun in GB. It originates 25 prefixes in the global routing table.
Who holds AS204921
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
What AS204921 announces
Prefixes originated by AS204921 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 AS204921 is reached through
The AS just before AS204921 in the paths our looking glass collectors hold, for 25 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
Provider authorization
AS204921 publishes an ASPA naming these providers. 4 ASes name it as a provider in theirs. Check a path.
The 4 ASes that name AS204921 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 |
|---|---|---|
| RIPE | YunZheng-Network | RIPE-NCC-END-MNT, ZYS-MNT |
Route objects with origin AS204921: RIPE 38 · RADB 3 · ARIN 1