Data as of Nov 3, 2026
158.11.40.0/22
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
Recent change
New origin Oct 16, 2026
from AS367 United States Department of Defense (DoD)
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | RPKI |
|---|---|---|---|
| 158.8.0.0/14 since Dec 2010 | AS721 | Business |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 158.11.40.0/23 since Oct 21, 2026 | AS1540 | Business | ||
| 158.11.42.0/23 since Oct 10, 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 |
|---|---|---|---|---|---|---|
| 158.11.0.0/16 | 65,536 | TACTICAL-PEO-C3T-20 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | May 13, 1992 | [email protected] |
| └ 158.11.0.0/16 | 65,536 | TACTICAL-PEO-C3T-20 | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 25, 2025 | [email protected] |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 158.11.0.0/16
- Registration type
- Direct Allocation
- Record created
- May 13, 1992
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 25, 2025
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
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Rotating
- First seen
- Apr 2019
- Current origin since
- Oct 16, 2026 · under a month
- Origin networks
- 3
- Last change of origin
- Oct 16, 2026
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 158.11.0.0/16
- Netname
- TACTICAL-PEO-C3T-20
- 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-158-11-0-0-2
- Parent
- NET-158-11-0-0-1
- Created
- Aug 25, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- May 13, 1992
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN