208.121.0.0/24 San Francisco Department of Telecommunications and Information Services
Announced by AS39961 San Francisco Department of Telecommunications and Information Services. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 208.121.0.0/24
Prefix
Origin
AS39961 CCSF
RPKI
RPKI valid
Size
256 addresses
Less specific
none
More specifics
0
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-13 20:02 UTC
Paths
How 208.121.0.0/24 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 174 3257 11404 39961
| Origin | AS39961 San Francisco Department of Telecommunications and Information Services |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 5d 18h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 1299 11404 39961
| Origin | AS39961 San Francisco Department of Telecommunications and Information Services |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 2h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 1299 11404 39961
| Origin | AS39961 San Francisco Department of Telecommunications and Information Services |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 2h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS39961 to originate 208.121.0.0/16 up to /32. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 208.121.0.0/16 | /32 | AS39961 CCSF | 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 |
|---|---|---|---|---|
| 208.121.0.0/16 covering | AS39961 CCSF | ARIN | One South Van Ness Avenue 2nd Floor San Francisco CA 94103 United States | MNT-SFDTIS |