6.131.166.0/23
Currently announced by AS749 United States Department of Defense (AS749), in the routed prefix 6.131.0.0/16.
- Current ASN
- AS749
- United States Department of Defense (AS749)
- Routed prefix
- 6.131.0.0/16
- Most specific route covering this prefix
- ASNs over time
- 2
- 3 announcement records
- RIR allocation
- ARIN
- United States · 6.0.0.0/8
Routing data · Nov 8, 2026, 10:26 UTC
ASN historyEvery routed prefix covering 6.131.166.0/23
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 6.131.166.0/23 | AS1540 | Headquarters, USAISC |  United States | 2026-11-07 02:21 | 2026-11-07 04:26 | Stopped |
| 6.131.164.0/22 | AS1540 | Headquarters, USAISC | United States | Before monitoring | 2026-11-07 04:26 | Stopped |
| 6.131.0.0/16 | AS749 | United States Department of Defense (AS749) | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
More specific routes0 total
No more specific routes inside this prefix.
Change logAll changes
| Detected (UTC) | Prefix | Change | ASN | Name | Previous ASN | Country |
|---|---|---|---|---|---|---|
| 2026-11-07 06:25 | 6.131.166.0/23 | Withdrawal | AS1540 | Headquarters, USAISC | — | United States |
| 2026-11-07 06:25 | 6.131.164.0/22 | Withdrawal | AS1540 | Headquarters, USAISC | — | United States |
| 2026-11-07 02:21 | 6.131.166.0/23 | New announcementNo longer announced | AS1540 | Headquarters, USAISC | — | United States |