2001:253:209::/48 China Education and Research Network (CERNET)
Announced by AS142075 China Education and Research Network (CERNET). RPKI valid Seen by 4 of our 5 looking glass sessions.
Summary
What the table says about 2001:253:209::/48
Prefix
Origin
AS142075 AS142075-9
RPKI
RPKI valid
Size
65,536 /64s
Less specific
More specifics
0
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-12 16:06 UTC
Paths
How 2001:253:209::/48 is reached
Every path our looking glass collectors hold for this exact prefix. Open one for its attributes, or see them all side by side in the looking glass.
AS36601 TNT (TNT - Tampa, FL)Collector-1-TAMPA-FL36601 13760 7029 6939 38255×2 38272 142075
| Origin | AS142075 China Education and Research Network (CERNET) |
| Origin code | IGP |
| Communities | 7029:2089 36601:150 36601:2001 |
| Updated | 4d 14h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 6939 38255×2 38272 142075
| Origin | AS142075 China Education and Research Network (CERNET) |
| Origin code | IGP |
| Communities | 903:13760 |
| Updated | 4d 22h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS142075 to originate 2001:253:209::/48 up to /48. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 2001:253:209::/48 | /48 | AS142075 AS142075-9 | APNIC |
| 2001:253::/32 | /32 | AS23910 CNGI-CERNET2-AS-AP | APNIC |
| 2001:253::/32 | /32 | AS38272 FITI-AS-BKB | APNIC |
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 |
|---|---|---|---|---|
| 2001:253::/32 covering | AS38272 FITI-AS-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.