Data as of Nov 3, 2026
164.176.0.0/16
No anonymizer space · no proxy exits in 30 daysHeadquarters, USAISC · reallocated from 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 |
|---|---|---|---|---|
| 164.176.10.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.34.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.35.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.36.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.37.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.40.0/23 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.66.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.67.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.68.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.69.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.70.0/23 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.72.0/23 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.98.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.99.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.100.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.101.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.102.0/23 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.104.0/23 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.130.0/24 since Jan 2026 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.131.0/24 since Jan 2026 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.132.0/24 since Dec 2025 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.133.0/24 since Jan 2026 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.134.0/23 since Jan 2026 | AS1516 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 164.176.136.0/23 since Jan 2026 | AS1516 | 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 |
|---|---|---|---|---|---|---|
| 164.169.0.0 - 164.176.255.255 | 524,288 | CTNOSC-NETBLK | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Jun 27, 1997 | [email protected] |
| └ 164.169.0.0 - 164.176.255.255 | 524,288 | CTNOSC-NETBLK | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 20, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 164.169.0.0 - 164.176.255.255
- Registration type
- Direct Allocation
- Record created
- Jun 27, 1997
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 20, 2025
Origin network
AS1516
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
- Sep 2021
- Current origin since
- Dec 2025 · 11 mo
- Origin networks
- 2
- Last change of origin
- Jul 2026
Recorded history
History
- Handoffs
- 2
Whois
Registration for this announcement
- Range
- 164.169.0.0 - 164.176.255.255
- Netname
- CTNOSC-NETBLK
- 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-164-169-0-0-2
- Parent
- NET-164-169-0-0-1
- Created
- Aug 20, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Jun 27, 1997
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN