Data as of Nov 5, 2026
163.251.121.0/24
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
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 |
|---|---|---|---|---|---|---|
| 163.251.0.0/16 | 65,536 | SRFYOKONET2 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Oct 19, 1992 | disa. |
| └ 163.251.0.0/16 | 65,536 | SRFYOKONET2 | Navy Network Information Center (NNIC) (NNICN-1) · US | Reallocated | Aug 14, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 163.
251. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Oct 19, 1992
- Legacy
- yes
- Reallocated to
- Navy Network Information Center (NNIC) (NNICN-1)
- Reallocated
- Aug 14, 2025
Origin network
AS619
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
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- Sep 2010
- Current origin since
- Sep 2010 · 16 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS619 | NTTCOM | CenturyLink Proxy object | MAINT-JOB | Sep 1, 2016 |
Whois
Registration for this announcement
- Range
- 163.
251. 0. 0/ 16 - Netname
- SRFYOKONET2
- Registrant
- Navy Network Information Center (NNIC)
- Organization
- Navy Network Information Center (NNIC) (NNICN-1)
- Org address
- 2465 GUADALCANAL ROAD, VIRGINIA BEACH, VA, 23459
- Org country
- US
- Type
- Reallocated
- Handle
- NET-163-251-0-0-2
- Parent
- NET-163-251-0-0-1
- Created
- Aug 14, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 19, 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