Data as of Nov 8, 2026
199.122.56.0/21
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 199.122.56.0/24 since Oct 21, 2026 | AS1540 | 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 |
|---|---|---|---|---|---|---|
| 199.122.32.0/19 | 8,192 | DNOC-C | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Mar 9, 1994 | disa. |
| └ 199.122.32.0/19 | 8,192 | DNOC-C | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 20, 2025 | — |
| └ 199. | 768 | NETBLK-ANOSCE | Headquarters, USAISC (HEADQU-3) · US | Reassigned | Aug 20, 2025 | — |
| └ 199.122.60.0/23 | 512 | NET-RITCHIE | unknown | — | — | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 199.
122. 32. 0/ 19 - Registration type
- Direct Allocation
- Record created
- Mar 9, 1994
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 20, 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
- Rotating
- First seen
- May 2005
- Current origin since
- Jul 2025 · 1.3 yr
- Origin networks
- 3
- Last change of origin
- Jul 2025
Recorded history
History
- Handoffs
- 4
Whois
Registration for this announcement
- Range
- 199.
122. 32. 0/ 19 - Netname
- DNOC-C
- 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-199-122-32-0-2
- Parent
- NET-199-122-32-0-1
- Created
- Aug 20, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 9, 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