2001:250:5889::/48 China Education and Research Network Center
Announced by AS4538 China Education and Research Network Center. RPKI valid Seen by 0 of our 5 looking glass sessions.
Summary
What the table says about 2001:250:5889::/48
Prefix
Origin
AS4538 ERX-CERNET-BKB
RPKI
RPKI valid
Size
65,536 /64s
Less specific
More specifics
0
IRR route objects
0 exact, 7 covering
In RouteViews
2026-10-12 20:06 UTC
RPKI
Route origin authorizations
Covered by a ROA authorizing AS4538 to originate 2001:250:5889::/48 up to /48. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 2001:250:5889::/48 | /48 | AS4538 ERX-CERNET-BKB | APNIC |
| 2001:250:5889::/48 | /48 | AS24363 CNGI-JNN-IX-AS-AP | 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 |
|---|---|---|---|---|
| 2001:250:5800::/40 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:5800::/39 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:5800::/38 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:5800::/37 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:5000::/36 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:4000::/35 covering | AS4538 ERX-CERNET-BKB | APNIC | China Education and Research Network (CERNET) FIT 3-220, Tsinghua University | MAINT-CERNET-AP |
| 2001:250:4000::/34 covering | AS4538 ERX-CERNET-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.