Data as of Nov 12, 2026
138.158.192.0/18
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Nov 11, 2026
its first announcement on record
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 138.144.0.0/12 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 |
|---|---|---|---|---|---|---|
| 138.158.0.0/16 | 65,536 | DISN-IP-RESERVE-1-0 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Apr 3, 1992 | disa. |
| └ 138.158.0.0/16 | 65,536 | DISN-IP-RESERVE-1-0 | DoD Network Information Center (DNIC) · US | Reallocated | Aug 28, 2025 | disa. |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 138.
158. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Apr 3, 1992
- Legacy
- yes
- Reallocated to
- DoD Network Information Center (DNIC)
- Reallocated
- Aug 28, 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
- Nov 11, 2026
- Current origin since
- Nov 11, 2026 · under a month
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 138.
158. 0. 0/ 16 - Netname
- DISN-IP-RESERVE-1-0
- Registrant
- DoD Network Information Center
- Organization
- DoD Network Information Center (DNIC)
- Org address
- 3990 E. Broad Street, Columbus, OH, 43218
- Org country
- US
- Type
- Reallocated
- Handle
- NET-138-158-0-0-2
- Parent
- NET-138-158-0-0-1
- Created
- Aug 28, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 3, 1992
- Status
- assigned
Report abuse
Abuse contact
- disa.
columbus. ns. mbx. hostmaster-dod-nic@ mail. mil - Name
- Network DoD
- Phone
- +1-844-347-2457
- Handle
- MIL-HSTMST-ARIN