206.203.64.0/18
Currently announced jointly by AS203 Level 3 Parent, LLC, AS10599 McKesson Corp., in the routed prefix 206.203.64.0/18.
- Current ASN
- AS203 AS10599
- Level 3 Parent, LLC
- Routed prefix
- 206.203.64.0/18
- Most specific route covering this prefix
- ASNs over time
- 2
- 2 announcement records
- RIR allocation
- ARIN
- United States · 206.203.64.0/18
Routing data · Nov 8, 2026, 10:26 UTC
ASN historyEvery routed prefix covering 206.203.64.0/18
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 206.203.64.0/18 | AS203 | Level 3 Parent, LLC |  United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.64.0/18 | AS10599 | McKesson Corp. | United States | 2026-10-23 06:22 | 2026-11-08 10:26 | Announcing |
More specific routes15 total
| Prefix | ASN | Name | Registered country | First seen (UTC) | Last seen (UTC) | Status |
|---|---|---|---|---|---|---|
| 206.203.65.0/24 | AS10599 | McKesson Corp. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.67.0/24 | AS10599 | McKesson Corp. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.73.0/24 | AS10599 | McKesson Corp. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.74.0/24 | AS10599 | McKesson Corp. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.78.0/24 | AS203 | Level 3 Parent, LLC | United States | 2026-11-06 06:20 | 2026-11-08 10:26 | Announcing |
| 206.203.78.0/24 | AS10599 | McKesson Corp. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.80.0/24 | AS27451 | US Oncology, Inc. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.81.0/24 | AS27451 | US Oncology, Inc. | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.88.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.89.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.90.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.91.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.92.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.93.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
| 206.203.123.0/24 | AS8075 | Microsoft | United States | Before monitoring | 2026-11-08 10:26 | Announcing |
Change logAll changes
The routes covering this address have had no origin changes since ASNBase started monitoring.