157.238.80.0/20 Cityside Fiber
Announced by AS18731 Cityside Fiber. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 157.238.80.0/20
Prefix
Origin
AS18731 CITYSIDE-01
RPKI
RPKI valid
Size
4,096 addresses
Less specific
More specifics
0
IRR route objects
0 exact, 1 covering
In RouteViews
2026-10-15 00:02 UTC
Paths
How 157.238.80.0/20 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 174 2914 18731
| Origin | AS18731 Cityside Fiber |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 7d 0h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 2914 18731
| Origin | AS18731 Cityside Fiber |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 7d 8h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 2914 18731
| Origin | AS18731 Cityside Fiber |
| Origin code | IGP |
| Communities | 6461:5997 36295:100 36295:6461 |
| Updated | 10h 13m ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS18731 to originate 157.238.80.0/20 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 157.238.80.0/20 | /24 | AS18731 CITYSIDE-01 | ARIN |
| 157.238.0.0/16 | /16 | AS2914 NTT-DATA-2914 | 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 |
|---|---|---|---|---|
| 157.238.0.0/16 covering | AS2914 NTT-DATA-2914 | NTTCOM | NTT-BB-1 | MAINT-NTTCOM-BB |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.