72.21.40.0/21 Rackspace Ltd.
Announced by AS15395 Rackspace Ltd. RPKI not found Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 72.21.40.0/21
Prefix
Origin
AS15395 RACKSPACE-LON
RPKI
RPKI not found
Size
2,048 addresses
Less specific
none
More specifics
0
IRR route objects
1 exact, 2 covering
In RouteViews
2026-10-13 12:02 UTC
Paths
How 72.21.40.0/21 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 12200 15395
| Origin | AS15395 Rackspace Ltd. |
| Origin code | IGP |
| Communities | 174:21101 174:22012 36601:150 36601:174 36601:2001 |
| Updated | 5d 12h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 12200 15395
| Origin | AS15395 Rackspace Ltd. |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 4d 17h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6939 12200 15395
| Origin | AS15395 Rackspace Ltd. |
| Origin code | IGP |
| Communities | 36295:100 |
| Updated | 5d 21h 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 |
|---|---|---|---|---|
| 72.21.40.0/21 | AS15395 RACKSPACE-LON | RADB | LEGACY DP | MAINT-AS10532 |
| 72.21.32.0/19 covering | AS13767 DATABANK-DFW | LEVEL3 | /19 for LayeredTech | DBANK-MNT |
| 72.21.32.0/19 covering | AS24778 Datapipe-UK | RADB | DP Europe | MAINT-AS14492 |