61.56.8.0/21 National Center for Research on Earthquake Engineering
Announced by AS18183 National Center for Research on Earthquake Engineering. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 61.56.8.0/21
Prefix
Origin
AS18183 NCREE
RPKI
RPKI valid
Size
2,048 addresses
Less specific
More specifics
0
IRR route objects
1 exact, 3 covering
In RouteViews
2026-10-13 12:02 UTC
Paths
How 61.56.8.0/21 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 174 9505 18183×2
| Origin | AS18183 National Center for Research on Earthquake Engineering |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 11h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 9505 18183×2
| Origin | AS18183 National Center for Research on Earthquake Engineering |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 20h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 9681 18183
| Origin | AS18183 National Center for Research on Earthquake Engineering |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 20h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS18183 to originate 61.56.0.0/20 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 61.56.0.0/20 | /24 | AS18183 NCREE | 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 |
|---|---|---|---|---|
| 61.56.8.0/21 | AS18183 NCREE | RADB | National Center for Research on Earthquake Engineering (NCREE) | MAINT-AS17709 |
| 61.56.0.0/20 covering | AS18183 NCREE | NTTCOM | NCREE (proxy-registered route object) | MAINT-ASNET |
| 61.56.0.0/20 covering | AS18183 NCREE | RADB | PACNET (proxy-registered route object) | MAINT-AS4637 |
| 61.56.0.0/20 covering | AS17709 APT | REACH | REACH (Customer Route) | MAINT-REACH-NOC |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.