20.137.176.0/21 DXC US Latin America Corporation
Announced by AS4237 DXC US Latin America Corporation. RPKI valid Seen by 5 of our 5 looking glass sessions.
Summary
What the table says about 20.137.176.0/21
Prefix
Origin
AS4237 CSC-IGN-FTW-AS4237
RPKI
RPKI valid
Size
2,048 addresses
Less specific
More specifics
0
IRR route objects
2 exact, 2 covering
In RouteViews
2026-10-16 04:02 UTC
Paths
How 20.137.176.0/21 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 3356 3360×2 4237
| Origin | AS4237 DXC US Latin America Corporation |
| Origin code | IGP |
| Communities | 174:21000 174:22013 36601:150 36601:174 36601:2001 |
| Updated | 2d 2h ago |
AS903 UNIFIED-COMMUNICATIONS-TECHNOLOGIES (UCT - Valdosta, GA)Collector-2-COCOA-FL903 13760 3356 3360×2 4237
| Origin | AS4237 DXC US Latin America Corporation |
| Origin code | IGP |
| Communities | 903:900 903:13760 |
| Updated | 8d 12h ago |
AS36295 FLORIDA-HIGH-SPEED-INTERNET (FLHSI - Cocoa, FL)Collector-2-COCOA-FL36295 6461 46887 3360×2 4237
| Origin | AS4237 DXC US Latin America Corporation |
| Origin code | IGP |
| Communities | 6461:5998 36295:100 36295:6461 |
| Updated | 17h 13m ago |
RPKI
Route origin authorizations
Covered by a ROA authorizing AS4237 to originate 20.137.176.0/21 up to /21. Validate another origin.
| ROA prefix | Max length | Authorized origin | Trust anchor |
|---|---|---|---|
| 20.137.176.0/21 | /21 | AS202 CENTURYLINK-LEGACY-LVLT-202 | ARIN |
| 20.137.176.0/21 | /21 | AS203 CENTURYLINK-LEGACY-LVLT-203 | ARIN |
| 20.137.176.0/21 | /21 | AS3356 LEVEL3 | ARIN |
| 20.137.176.0/21 | /21 | AS4237 CSC-IGN-FTW-AS4237 | ARIN |
| 20.137.176.0/20 | /20 | AS202 CENTURYLINK-LEGACY-LVLT-202 | ARIN |
| 20.137.176.0/20 | /20 | AS203 CENTURYLINK-LEGACY-LVLT-203 | ARIN |
| 20.137.176.0/20 | /20 | AS3356 LEVEL3 | ARIN |
| 20.137.176.0/20 | /20 | AS4237 CSC-IGN-FTW-AS4237 | 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 |
|---|---|---|---|---|
| 20.137.176.0/21 | AS4237 CSC-IGN-FTW-AS4237 | ARIN | DXC Technology | MNT-ESLAC-Z |
| 20.137.176.0/21 | AS4237 CSC-IGN-FTW-AS4237 | RADB | DXC Technology | AS71-MNT |
| 20.137.176.0/20 covering | AS4237 CSC-IGN-FTW-AS4237 | ARIN | DXC Technology | MNT-ESLAC-Z |
| 20.137.176.0/20 covering | AS4237 CSC-IGN-FTW-AS4237 | RADB | DXC Technology | AS71-MNT |
Less specific
Covering prefixes
Announced prefixes that contain this one, most specific first.