221.213.28.0/22
Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-09-21 | Current | AS4837 | China Unicom Backbone |
221.213.28.0/22Origin history for this exact network block.
| From | Until | Origin ASN | Name at start |
|---|---|---|---|
| 2026-09-21 | Current | AS4837 | China Unicom Backbone |