Data as of Nov 10, 2026
158.239.0.0/20
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 158.236.0.0/14 since Dec 2010 | AS721 | Business |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 158.239.0.0/16 | 65,536 | USMC5 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Apr 8, 1992 | disa. |
| └ 158.239.0.0/16 | 65,536 | USMC5 | Marine Corps Cyberspace Operations Group (UNOC) · US | Reallocated | Aug 13, 2025 | disa. |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 158.
239. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Apr 8, 1992
- Legacy
- yes
- Reallocated to
- Marine Corps Cyberspace Operations Group (UNOC)
- Reallocated
- Aug 13, 2025
Origin network
AS637
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Registered
- Apr 19, 1990
- Domain
- mail.mil
- Industry
- Military, Defense, National Security, and International Affairs
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- Jan 2026
- Current origin since
- Jan 2026 · 9 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 158.
239. 0. 0/ 16 - Netname
- USMC5
- Registrant
- Marine Corps Cyberspace Operations Group
- Organization
- Marine Corps Cyberspace Operations Group (UNOC)
- Org address
- COMMANDING OFFICER, MCNOSC, QUANTICO, VA, 22134
- Org country
- US
- Type
- Reallocated
- Handle
- NET-158-239-0-0-2
- Parent
- NET-158-239-0-0-1
- Created
- Aug 13, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 8, 1992
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN