204.147.0.0/20 CITY OF MADISON
Announced by AS25979 CITY OF MADISON. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 204.147.0.0/20
Prefix
Origin
AS25979 COMDC-WI
RPKI
RPKI not found
Size
4,096 addresses
Less specific
none
More specifics
0
IRR route objects
2 exact, 0 covering
In RouteViews
2026-10-13 00:02 UTC
Paths
How 204.147.0.0/20 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 6939 2381×2 25979
| Origin | AS25979 CITY OF MADISON |
| Origin code | IGP |
| Communities | 13760:3002 36601:150 36601:2001 36601:13760 |
| Updated | 4d 21h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 6939 2381×2 25979
| Origin | AS25979 CITY OF MADISON |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 5d 6h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 2381×2 25979
| Origin | AS25979 CITY OF MADISON |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 6h ago |
RPKI
Route origin authorizations
No ROA covers this prefix, so RPKI has nothing to say about who may originate it. Validate another origin.
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 |
|---|---|---|---|---|
| 204.147.0.0/20 | AS22561 CENTURYLINK-LEGACY-LIGHTCORE | LEVEL3 | add route | LIGHTCORE-MNT |
| 204.147.0.0/20 | AS25979 COMDC-WI | RADB | City of Madison Government | MAINT-WISCNET |