143.73.0.0/22
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-10-21 | Current | AS1540 | Headquarters, USAISC |
| 2026-10-06 | 2026-10-10 | AS367 | United States Department of Defense (DoD) |
| 2026-09-30 | 2026-10-04 | AS367 | United States Department of Defense (DoD) |
| 2026-09-22 | 2026-09-24 | AS1540 | Headquarters, USAISC |
| 2026-09-15 | 2026-09-17 | AS1540 | Headquarters, USAISC |
| 2026-09-11 | 2026-09-12 | AS1540 | Headquarters, USAISC |
| 2026-09-03 | 2026-09-04 | AS1540 | Headquarters, USAISC |
| 2026-09-01 | 2026-09-02 | AS1540 | Headquarters, USAISC |
| 2026-08-28 | 2026-08-29 | AS1540 | Headquarters, USAISC |
| 2026-08-25 | 2026-08-26 | AS1540 | Headquarters, USAISC |
| 2026-08-21 | 2026-08-22 | AS1540 | Headquarters, USAISC |
| 2026-08-13 | 2026-08-15 | AS1540 | Headquarters, USAISC |
| 2026-08-11 | 2026-08-12 | AS1540 | Headquarters, USAISC |
| 2026-07-22 | 2026-07-23 | AS1540 | Headquarters, USAISC |
| 2026-07-16 | 2026-07-17 | AS1540 | Headquarters, USAISC |