Data as of Nov 7, 2026
199.251.0.0/16
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Nesting
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Sized by addresses, colored by each announcement's type. Click a tile with children to zoom in, a leaf to open it.
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 199.251.8.0/21 since Aug 2026 | AS27064 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.66.0/24 since Sep 2025 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.67.0/24 since Sep 2025 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.68.0/24 since Sep 2025 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.81.0/24 since Jan 2024 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.82.0/24 since Jan 2024 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.83.0/24 since Jan 2024 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.88.0/23 since Nov 2023 | AS427 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.155.0/24 since Dec 2024 | AS391 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.156.0/24 since Dec 2024 | AS391 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.232.0/24 since May 2024 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.244.0/24 since Sep 2025 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.245.0/24 since Sep 2025 | AS56 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 199.251.253.0/24 since May 2026 | AS56 | 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. | 131,072 | DNIC-NETBLK-199-251 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | May 2, 1994 | disa. |
| └ 199. | 131,072 | DNIC-NETBLK-199-251 | DoD Network Information Center (DNIC) · US | Reallocated | Aug 27, 2025 | disa. |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 199.
251. 0. 0 - 199. 252. 255. 255 - Registration type
- Direct Allocation
- Record created
- May 2, 1994
- Legacy
- yes
- Reallocated to
- DoD Network Information Center (DNIC)
- Reallocated
- Aug 27, 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
- Dec 2010 · 16 yr
- Origin networks
- 2
- Last change of origin
- Dec 2010
Recorded history
History
- Handoffs
- 2
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 199.251.27.0/24 | AS400 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 199.251.187.0/24 | AS400 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 199.251.217.0/24 | AS1985 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 199.251.218.0/24 | AS1985 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
| 199.251.219.0/24 | AS1985 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 199.
251. 0. 0 - 199. 252. 255. 255 - Netname
- DNIC-NETBLK-199-251
- 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-199-251-0-0-2
- Parent
- NET-199-251-0-0-1
- Created
- Aug 27, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- May 2, 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