Data as of Nov 6, 2026
199.122.4.0/23
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 199.122.5.0/24 since Aug 2018 | AS5972 | Business | United States Department of Defense (DoD) via DoD Network Information Center |
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 |
|---|---|---|---|---|---|---|
| 199. | 768 | NETBLK-DMSSC-LABNET | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Feb 15, 1994 | disa. |
| └ 199. | 768 | NETBLK-DMSSC-LABNET | DoD Network Information Center (DNIC) · US | Reallocated | Sep 8, 2025 | disa. |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 199.
122. 4. 0 - 199. 122. 6. 255 - Registration type
- Direct Allocation
- Record created
- Feb 15, 1994
- Legacy
- yes
- Reallocated to
- DoD Network Information Center (DNIC)
- Reallocated
- Sep 8, 2025
Origin network
AS721
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Domain
- mail.mil
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Aug 2017 · 9.2 yr
- Origin networks
- 2
- Last change of origin
- Dec 2010
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 199.
122. 4. 0 - 199. 122. 6. 255 - Netname
- NETBLK-DMSSC-LABNET
- 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-199-122-4-0-2
- Parent
- NET-199-122-4-0-1
- Created
- Sep 8, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Feb 15, 1994
- 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