Data as of Nov 9, 2026
137.51.247.0/24
No anonymizer space · no proxy exits in 30 daysAT&T Enterprises, LLC · space held by Northrop Grumman Corp.
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 137.51.0.0/16 since May 2005 | AS1906 | Business | Northrop Grumman Corp. |
Network & registry
Origin network
AS2687
US
- Name
- AT&T Enterprises, LLC
- Type
- Internet provider
- Registered
- Jun 2, 1993
- Domain
- att.com
- Website
- www.att.com
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2021
- Current origin since
- Sep 2021 · 5.1 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS2687 | RADB | Proxy route | MAINT-AS7545 | Nov 13, 2023 |
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