Data as of Nov 3, 2026
147.104.133.0/24
No anonymizer space · no proxy exits in 30 daysHeadquarters, USAISC
Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
30 / 100 · Medium
Recently moved
Recent change
New origin Jul 2026
from AS367 United States Department of Defense (DoD), after 1.7 years unannounced
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 |
|---|---|---|---|---|---|---|
| 147.104.0.0/16 | 65,536 | PM-WIN-T-NET2 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Mar 13, 1991 | [email protected] |
| └ 147.104.0.0/16 | 65,536 | PM-WIN-T-NET2 | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 22, 2025 | — |
Network & registry
Origin network
AS1540
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
Who has announced this prefix
latest 12 of 14 stints
Summary
Routing history
- Pattern
- Reactivated
- First seen
- Jul 2010
- Current origin since
- Jul 2026 · 4 mo
- Origin networks
- 8
- Last change of origin
- Jul 2026
Recorded history
History
- Stints on record
- 14
- Handoffs
- 9
Whois
Registration for this announcement
- Range
- Not stated by the registry
- Netname
- PM-WIN-T-NET2
- Registrant
- Headquarters, USAISC (HEADQU-3)
- Organization
- Not stated by the registry
- Created
- Aug 22, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Mar 13, 1991
- Status
- assigned