72.163.0.0/16 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 72.163.0.0/16
Prefix
Origin
AS109 CISCOSYSTEMS
RPKI
RPKI valid
Size
65,536 addresses
Less specific
none
More specifics
11
IRR route objects
3 exact, 0 covering
In RouteViews
2026-10-14 16:02 UTC
Paths
How 72.163.0.0/16 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 3356 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 13h 2m ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 6d 23h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 109
| Origin | AS109 CISCO SYSTEMS, INC. |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 6d 23h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS109 to originate 72.163.0.0/16 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 72.163.0.0/16 | /24 | AS109 CISCOSYSTEMS | ARIN |
| 72.163.0.0/16 | /24 | AS198949 Radware | 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 |
|---|---|---|---|---|
| 72.163.0.0/16 | AS109 CISCOSYSTEMS | ARIN | 170 West Tasman Drive San Jose CA 95134 United States | MNT-CS-2831 |
| 72.163.0.0/16 | AS109 CISCOSYSTEMS | RADB | CISCO SYSTEMS, INC 170 WEST TASMAN DRIVE SAN JOSE, CA 95134 US RP-SJC | MAINT-AS109 |
| 72.163.0.0/16 | AS198949 Radware | RADB | Cisco IT | MAINT-AS198949 |
More specific
Prefixes inside 72.163.0.0/16
11 announced prefixes fall inside this one.
Show the 11 prefixes
72.163.0.0/18 AS109 CISCOSYSTEMS72.163.4.0/24 AS109 CISCOSYSTEMS72.163.7.0/24 AS109 CISCOSYSTEMS72.163.64.0/20 AS109 CISCOSYSTEMS72.163.80.0/20 AS109 CISCOSYSTEMS72.163.96.0/19 AS109 CISCOSYSTEMS72.163.128.0/18 AS109 CISCOSYSTEMS72.163.192.0/19 AS109 CISCOSYSTEMS72.163.224.0/19 AS109 CISCOSYSTEMS72.163.240.0/23 AS109 CISCOSYSTEMS72.163.248.0/22 AS109 CISCOSYSTEMS