138.156.0.0/16
Currently announced by AS637 United States Department of Defense (DoD), in the routed prefix 138.156.0.0/16.
- Current ASN
- AS637
- United States Department of Defense (DoD)
- Routed prefix
- 138.156.0.0/16
- Most specific route covering this prefix
- ASNs over time
- 2
- 2 announcement records
- RIR allocation
- ARIN
- United States · 138.156.0.0/16
Routing data · Nov 2, 2026, 14:22 UTC
ASN historyEvery routed prefix covering 138.156.0.0/16
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 138.156.0.0/16 | AS637 | United States Department of Defense (DoD) |  United States | Before monitoring | 2026-11-02 14:22 | Announcing |
| 138.144.0.0/12 | AS721 | United States Department of Defense (DoD) | United States | Before monitoring | 2026-11-02 14:22 | Announcing |
More specific routes2 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 138.156.232.0/23 | AS637 | United States Department of Defense (DoD) | United States | Before monitoring | 2026-11-02 14:22 | Announcing |
| 138.156.248.0/21 | AS637 | United States Department of Defense (DoD) | United States | Before monitoring | 2026-11-02 14:22 | Announcing |
Change logAll changes
The routes covering this address have had no origin changes since ASNBase started monitoring.