173.39.0.0/18 CISCO SYSTEMS, INC.
Announced by AS109 CISCO SYSTEMS, INC. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 173.39.0.0/18
Prefix
Origin
AS109 CISCOSYSTEMS
RPKI
RPKI valid
Size
16,384 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 3 covering
In RouteViews
2026-10-16 12:01 UTC
Paths
How 173.39.0.0/18 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 9498 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 8d 10h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 3257 9498 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 8d 19h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 9498 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 6461:5998 36295:100 36295:6461 |
| Updated | 23h 40m ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS109 to originate 173.36.0.0/14 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 173.38.0.0/15 | /24 | AS198949 Radware | ARIN |
| 173.36.0.0/14 | /24 | AS109 CISCOSYSTEMS | 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 |
|---|---|---|---|---|
| 173.39.0.0/18 | AS109 CISCOSYSTEMS | ARIN | 170 West Tasman Drive San Jose CA 95134 United States | MNT-CS-2831 |
| 173.39.0.0/18 | AS109 CISCOSYSTEMS | RADB | CISCO SYSTEMS, INC 170 WEST TASMAN DRIVE SAN JOSE, CA 95134 US RP-BGL | MAINT-AS109 |
| 173.38.0.0/15 covering | AS198949 Radware | ARIN | CISCO SYSTEMS, INC. | MNT-CS-2831 |
| 173.36.0.0/14 covering | AS109 CISCOSYSTEMS | ARIN | 170 West Tasman Drive San Jose CA 95134 United States | MNT-CS-2831 |
| 173.36.0.0/14 covering | AS109 CISCOSYSTEMS | RADB | CISCO SYSTEMS, INC 170 WEST TASMAN DRIVE SAN JOSE, CA 95134 US RP-SJC | MAINT-AS109 |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.