187.73.128.0/21 ITIBR - Instituto de Tecnologia Informacao Brasil
Announced by AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 187.73.128.0/21
Prefix
Origin
AS28576 AS28576
RPKI
RPKI valid
Size
2,048 addresses
Less specific
none
More specifics
2
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-16 04:02 UTC
Paths
How 187.73.128.0/21 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 13760 22356 28576
| Origin | AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil |
| Origin code | IGP |
| Communities | 13760:3002 36601:150 36601:2001 36601:13760 |
| Updated | 2d 2h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 22356 28576
| Origin | AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 8d 13h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 22356 28576
| Origin | AS28576 ITIBR - Instituto de Tecnologia Informacao Brasil |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 3h 49m ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS28576 to originate 187.73.128.0/21 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 187.73.128.0/21 | /24 | AS28576 AS28576 | LACNIC |
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 |
|---|---|---|---|---|
| 187.73.128.0/20 covering | AS28576 AS28576 | RADB | Proxy Registration for PCCW Global customer (CTI PROVEDOR DE ACESSO A INTERNET LTDA.) | MAINT-AS3491 |
More specific
Prefixes inside 187.73.128.0/21
2 announced prefixes fall inside this one.