203.91.122.0/23 China Education and Research Network Center
Announced by AS4538 China Education and Research Network Center. RPKI not found Seen by 0 of our 5 looking glass sessions.
Summary
What the table says about 203.91.122.0/23
Prefix
Origin
AS4538 ERX-CERNET-BKB
RPKI
RPKI not found
Size
512 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 3 covering
In RouteViews
2026-10-15 00:02 UTC
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
IRR
Route objects
Registered in the IRR for this prefix and the ones covering it. Look it up live.
| Route | Origin | Source | Description | Maintained by |
|---|---|---|---|---|
| 203.91.120.0/22 covering | AS24575 DRAGONLAB-AS-AP | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 203.91.120.0/21 covering | AS4538 ERX-CERNET-BKB | APNIC | CERNET | MAINT-CERNET-AP |
| 203.91.120.0/21 covering | AS4538 ERX-CERNET-BKB | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.