138.137.72.0/21
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-08-27 | Current | AS5972 | United States Department of Defense (DoD) |
| 2026-08-09 | 2026-08-26 | AS5972 | United States Department of Defense (DoD) |
| 2026-07-12 | 2026-08-07 | AS5972 | United States Department of Defense (DoD) |
| 2026-06-27 | 2026-07-11 | AS5972 | United States Department of Defense (DoD) |
| 2026-06-13 | 2026-06-26 | AS5972 | United States Department of Defense (DoD) |