Data as of Nov 5, 2026
164.173.0.0/16
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 164.172.0.0/14 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC |
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 |
|---|---|---|---|---|---|---|
| 164. | 524,288 | CTNOSC-NETBLK | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Jun 27, 1997 | disa. |
| └ 164. | 524,288 | CTNOSC-NETBLK | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 20, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 164.
169. 0. 0 - 164. 176. 255. 255 - Registration type
- Direct Allocation
- Record created
- Jun 27, 1997
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 20, 2025
Origin network
AS668
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Registered
- Apr 24, 1990
- Domain
- mail.mil
- Website
- www.hpc.mil/solution-areas/networking
- 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
- Feb 2026
- Current origin since
- Feb 2026 · 8 mo
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS668 | RADB | DREN IPv4 prefix | MAINT-AS668 | Mar 2, 2026 |
Whois
Registration for this announcement
- Range
- 164.
169. 0. 0 - 164. 176. 255. 255 - Netname
- CTNOSC-NETBLK
- Registrant
- Headquarters, USAISC
- Organization
- Headquarters, USAISC (HEADQU-3)
- Org address
- NETC-ANC CONUS TNOSC, Fort Huachuca, AZ, 85613
- Org country
- US
- Type
- Reallocated
- Handle
- NET-164-169-0-0-2
- Parent
- NET-164-169-0-0-1
- Created
- Aug 20, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Jun 27, 1997
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN