100.42.16.0/23 Comcast Cable Communications, LLC
Announced by AS33651 Comcast Cable Communications, LLC. RPKI valid Seen by 5 of our 5 looking glass sessions. Also originated by AS33667
Summary
What the table says about 100.42.16.0/23
Prefix
Origin
AS33651 CMCS
RPKI
RPKI valid
Size
512 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 1 covering
In RouteViews
2026-10-14 20:02 UTC
Paths
How 100.42.16.0/23 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 7922 33651
| Origin | AS33651 Comcast Cable Communications, LLC |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 14h 56m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 33667
| Origin | AS33667 Comcast Cable Communications, LLC |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 1h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 7922 33651
| Origin | AS33651 Comcast Cable Communications, LLC |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 7d 1h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS33651 to originate 100.42.16.0/23 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 100.42.16.0/23 | /24 | AS33651 CMCS | ARIN |
| 100.42.16.0/23 | /24 | AS33667 CMCS | ARIN |
| 100.42.16.0/20 | /20 | AS46841 FORKNETWORKING | 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 |
|---|---|---|---|---|
| 100.42.16.0/23 | AS33651 CMCS | ARIN | Fork Networking, LLC | MNT-FORKN |
| 100.42.16.0/23 | AS33667 CMCS | ARIN | Fork Networking, LLC | MNT-FORKN |
| 100.42.16.0/20 covering | AS46841 FORKNETWORKING | ARIN | Fork Networking, LLC | MNT-FORKN |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.