Data as of Nov 8, 2026
140.21.0.0/16
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Nesting
More-specifics by size
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 |
|---|---|---|---|---|
| 140.21.27.0/24 since Nov 2024 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.28.0/24 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.29.0/24 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.31.0/24 since Jun 2025 | AS27046 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.32.0/20 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.56.0/24 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.57.0/24 since Mar 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.58.0/24 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.60.0/24 since Apr 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.64.0/20 since Jun 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.99.0/24 since Jan 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.112.0/23 since Feb 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.116.0/24 since Aug 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.128.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.132.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.136.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.140.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.144.0/22 since May 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.148.0/22 since May 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.152.0/22 since May 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.156.0/22 since May 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.160.0/22 since Sep 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.164.0/22 since Sep 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.168.0/22 since Sep 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.172.0/22 since Sep 2025 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.176.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.180.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.184.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.188.0/22 since Feb 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.196.0/22 since Jun 2026 | AS5852 | Business | United States Department of Defense (DoD) via DoD Network Information Center | |
| 140.21.200.0/22 since Jun 2026 | AS5852 | 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 |
|---|---|---|---|---|---|---|
| 140.21.0.0/16 | 65,536 | DNIC-NET-140-021 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Apr 8, 1990 | disa. |
| └ 140.21.0.0/16 | 65,536 | DNIC-NET-140-021 | DoD Network Information Center (DNIC) · US | Reallocated | Sep 2, 2025 | disa. |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 140.
21. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Apr 8, 1990
- Legacy
- yes
- Reallocated to
- DoD Network Information Center (DNIC)
- Reallocated
- Sep 2, 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
- Nov 2024 · 2.0 yr
- Origin networks
- 3
- Last change of origin
- Dec 2010
Recorded history
History
- Handoffs
- 3
Whois
Registration for this announcement
- Range
- 140.
21. 0. 0/ 16 - Netname
- DNIC-NET-140-021
- 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-140-21-0-0-2
- Parent
- NET-140-21-0-0-1
- Created
- Sep 2, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Apr 8, 1990
- 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