IPv4 prefix
204.154.136.0/22
- IP Prefix (CIDR)
- 204.154.136.0/22
- Subnet Mask
- 255.255.252.0
- Address Count
- 1,024
- Owner
- Department of Energy National Energy Technology Laboratory
- Handle
- IRDSD-1-Z
- Address
- PO Box 880 3610 Collins Ferry Road Morgantown WV 26507-0880 United States
- Registry
- ARIN
- Registered Prefix
- 204.154.136.0/22 (204.154.136.0 - 204.154.139.255)
- Delegated Prefix
- 204.154.140.0/24 (204.154.140.0 - 204.154.140.255)
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 204.154.136.0/23 | More specific | AS32982 | U.S. Department of Energy |
United States of America (US)
|
204.154.136.0 | 204.154.137.255 |
| 204.154.139.0/24 | More specific | AS32982 | U.S. Department of Energy |
United States of America (US)
|
204.154.139.0 | 204.154.139.255 |