Data as of Nov 5, 2026
137.51.0.0/16
No anonymizer space · no proxy exits in 30 daysNorthrop Grumman · space held by Northrop Grumman Corp.
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 137.51.246.0/24 since Sep 2021 | AS2687 | Business | Northrop Grumman Corp. | |
| 137.51.247.0/24 since Sep 2021 | AS2687 | Business | Northrop Grumman Corp. |
Network & registry
Origin network
AS1906
US
- Name
- Northrop Grumman
- Type
- Business
- Registered
- Jun 2, 1992
- Domain
- northropgrumman.com
- Industry
- Software Development
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- May 2005 · 21 yr
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 137.
51. 0. 0/ 16 - Netname
- NGC-LOGICON
- Registrant
- Northrop Grumman Corp.
- Organization
- Northrop Grumman Corp. (NGC-1)
- Org address
- Northrop Grumman Corporation, Bethpage, NY, 11714
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-137-51-0-0-1
- Parent
- NET-137-0-0-0-0
- Created
- Mar 8, 1991
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 8, 1991
- Status
- assigned
Report abuse
Abuse contact
- james.
lott@ ngc. com - Name
- Lott, James Michael
- Phone
- +1-909-984-2602
- Handle
- JML25-ARIN