IPv4 prefix
137.51.0.0/16
- IP Prefix (CIDR)
- 137.51.0.0/16
- Subnet Mask
- 255.255.0.0
- Address Count
- 65,536
- Owner
- Northrop Grumman Corp.
- Handle
- NGC-1
- Address
- Northrop Grumman Corporation 925 South Oyster Bay Road Bethpage NY 11714 United States
- Registry
- ARIN
- Registered Prefix
- 137.51.0.0/16 (137.51.0.0 - 137.51.255.255)
| Announced Prefix | Relationship | Origin ASN | Description | Country | First Address | Last Address |
|---|---|---|---|---|---|---|
| 137.51.0.0/16 | Exact | AS1906 | Northrop Grumman |
United States of America (US)
|
137.51.0.0 | 137.51.255.255 |
| 137.51.246.0/23 | More specific | AS2687 | AT&T Enterprises LLC |
United States of America (US)
|
137.51.246.0 | 137.51.247.255 |