Data as of Nov 14, 2026
143.76.17.0/24
No anonymizer space · no proxy exits in 30 daysHeadquarters, USAISC · reallocated from United States Department of Defense (DoD)
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Jul 2026
from AS1501 Headquarters, USAISC
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 143.76.16.0/23 since Oct 22, 2026 | AS1501 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 143.76.0.0/16 since Sep 2014 | AS721 | 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 |
|---|---|---|---|---|---|---|
| 143.76.0.0/16 | 65,536 | PM-WIN-T-NET10 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Mar 26, 1990 | disa. |
| └ 143.76.0.0/16 | 65,536 | PM-WIN-T-NET10 | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 21, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 143.
76. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Mar 26, 1990
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 21, 2025
Origin network
AS1501
US
- Name
- Headquarters, USAISC
- Type
- Business
- Registered
- May 12, 2004
- Domain
- mail.mil
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Jun 2025
- Current origin since
- Jul 2026 · 4 mo
- Origin networks
- 2
- Last change of origin
- Oct 2025
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 143.
76. 0. 0/ 16 - Netname
- PM-WIN-T-NET10
- 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-143-76-0-0-2
- Parent
- NET-143-76-0-0-1
- Created
- Aug 21, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 26, 1990
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN