5.187.56.0/21 Cortex IT SA
Announced by AS213298 Cortex IT SA. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 5.187.56.0/21
Prefix
Origin
AS213298 CTX-BRN-AS
RPKI
RPKI valid
Size
2,048 addresses
Less specific
none
More specifics
8
IRR route objects
1 exact, 0 covering
In RouteViews
2026-10-12 12:02 UTC
Paths
How 5.187.56.0/21 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 3356 25091 213298
| Origin | AS213298 Cortex IT SA |
| Origin code | IGP |
| Communities | 3356:2 3356:22 3356:100 3356:123 3356:506 3356:901 3356:2078 25091:41253 36601:150 36601:2001 36601:13760 |
| Updated | 4d 12h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 13030 213298
| Origin | AS213298 Cortex IT SA |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 21h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 25091 213298
| Origin | AS213298 Cortex IT SA |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 1d 8h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS213298 to originate 5.187.56.0/21 up to /21. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 5.187.56.0/21 | /21 | AS213298 CTX-BRN-AS | RIPE |
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 |
|---|---|---|---|---|
| 5.187.56.0/21 | AS213298 CTX-BRN-AS | RIPE | N | CORTEXIT-MNT |
More specific
Prefixes inside 5.187.56.0/21
8 announced prefixes fall inside this one.