Data as of Nov 5, 2026
158.20.128.0/17
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 Nov 5, 2026
from AS367 United 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 |
|---|---|---|---|---|
| 158.20.144.0/22 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.200.0/24 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.201.0/24 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.202.0/23 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.208.0/23 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.214.0/24 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.241.0/24 since Nov 5, 2026 | AS367 | Business | ||
| 158.20.252.0/24 since Jul 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 |
|---|---|---|---|---|---|---|
| 158.20.0.0/16 | 65,536 | STEWART-NET6 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Jun 9, 1992 | disa. |
| └ 158.20.0.0/16 | 65,536 | STEWART-NET6 | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 25, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 158.
20. 0. 0/ 16 - Registration type
- Direct Allocation
- Record created
- Jun 9, 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
Who has announced this prefix
Summary
Routing history
- Pattern
- Rotating
- First seen
- Aug 2016
- Current origin since
- Nov 5, 2026 · under a month
- Origin networks
- 4
- Last change of origin
- Oct 2022
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 158.
20. 0. 0/ 16 - Netname
- STEWART-NET6
- 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-158-20-0-0-2
- Parent
- NET-158-20-0-0-1
- Created
- Aug 25, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Jun 9, 1992
- Status
- assigned
Report abuse
Abuse contact
- nobody@
example. com - Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN