139.138.58.0/24 Cisco Systems Ironport Division
Announced by AS16417 Cisco Systems Ironport Division. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 139.138.58.0/24
Prefix
Origin
AS16417 IRONPORT-SYSTEMS-INC
RPKI
RPKI valid
Size
256 addresses
Less specific
none
More specifics
0
IRR route objects
1 exact, 3 covering
In RouteViews
2026-10-15 16:02 UTC
Paths
How 139.138.58.0/24 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 16417
| Origin | AS16417 Cisco Systems Ironport Division |
| Origin code | IGP |
| Communities | 174:21001 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 7d 17h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 7029 15830 16417
| Origin | AS16417 Cisco Systems Ironport Division |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 8d 1h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 16417
| Origin | AS16417 Cisco Systems Ironport Division |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 8d 1h ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS16417 to originate 139.138.58.0/24 up to /24. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 139.138.58.0/24 | /24 | AS16417 IRONPORT-SYSTEMS-INC | 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 |
|---|---|---|---|---|
| 139.138.58.0/24 | AS16417 IRONPORT-SYSTEMS-INC | ARIN | 170 West Tasman Drive San Jose CA 95134 United States | MNT-CISL-7 |
| 139.138.56.0/21 covering | AS12182 INTERNAP-2BLK | RADB | PNAP-SJE Cisco Systems | MAINT-AS1828 |
| 139.138.56.0/21 covering | AS16417 IRONPORT-SYSTEMS-INC | RADB | Switch Communications Customer Route | MAINT-SWITCH |
| 139.138.56.0/21 covering | AS30215 AS-CISCOHPS-APAC | RADB | Proxy route object registered by AS38195 | MAINT-AS38195 |