66.76.173.0/24 Shannon Medical Center
Announced by AS400947 Shannon Medical Center. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 66.76.173.0/24
Prefix
Origin
AS400947 SMC-ASN
RPKI
RPKI valid
Size
256 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-13 17:13 UTC
Paths
How 66.76.173.0/24 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 19108 400947
| Origin | AS400947 Shannon Medical Center |
| Origin code | IGP |
| Communities | 13760:3109 36601:150 36601:2001 36601:13760 |
| Updated | 5d 15h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 19108 400947
| Origin | AS400947 Shannon Medical Center |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 0h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 19108 400947
| Origin | AS400947 Shannon Medical Center |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 0h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS400947 to originate 66.76.173.0/24 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 66.76.173.0/24 | /24 | AS400947 SMC-ASN | ARIN |
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 |
|---|---|---|---|---|
| 66.76.0.0/16 covering | AS19108 SUDDENLINK-COMMUNICATIONS | RADB | Suddenlink Communications | MAINT-AS19108 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.