Data as of Nov 4, 2026
147.242.0.0/16
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 |
|---|---|---|---|---|
| 147.242.0.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.1.0/24 since Feb 2020 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.3.0/24 since Apr 2023 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.5.0/24 since Jul 2010 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.7.0/24 since Jul 2025 | AS5277 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.8.0/24 since Feb 2023 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.10.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.12.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.15.0/24 since Mar 2024 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.18.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.21.0/24 since Oct 2016 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.23.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.24.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.26.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.28.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.31.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.32.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.40.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.44.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.48.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.50.0/24 since Feb 2017 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.52.0/24 since Jan 2018 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.53.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.54.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.56.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.64.0/19 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.64.0/24 since Oct 22, 2026 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.96.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.100.0/22 since Aug 2025 | AS5277 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.104.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.105.0/24 since May 2020 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.106.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.108.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.112.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.120.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.124.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.126.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.127.0/24 since Feb 2018 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.128.0/24 since Jan 2018 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.129.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.130.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.132.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.136.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.144.0/20 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.160.0/19 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.192.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.200.0/24 since Nov 2018 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.201.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.202.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.204.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.208.0/20 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.224.0/21 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.232.0/22 since Sep 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.236.0/24 since Aug 2015 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.237.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.238.0/23 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.240.0/23 since Mar 2024 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.242.0/24 since Mar 2024 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.244.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.245.0/24 since Dec 2018 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.246.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.248.0/24 since Oct 2021 | AS749 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.249.0/24 since Apr 2020 | AS747 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 147.242.250.0/24 since Apr 2020 | AS747 | 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 |
|---|---|---|---|---|---|---|
| 147.242.0.0/16 | 65,536 | KOREA6 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Jan 22, 1992 | [email protected] |
| └ 147.242.0.0/16 | 65,536 | KOREA6 | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 22, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 147.242.0.0/16
- Registration type
- Direct Allocation
- Record created
- Jan 22, 1992
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 22, 2025
Origin network
AS747
US
- Name
- Headquarters, USAISC
- Type
- Business
- Registered
- Sep 25, 1990
- Domain
- mail.mil
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Mar 2024 · 2.7 yr
- Origin networks
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS747 | RADB | Proxy-Registered Route Object by DACOM(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 147.242.243.0/24 | AS747 | RADB | Proxy-Registered Route Object by LG Dacom(AS3786) | MAINT-AS3786 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 147.242.0.0/16
- Netname
- KOREA6
- 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-147-242-0-0-2
- Parent
- NET-147-242-0-0-1
- Created
- Aug 22, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 22, 1992
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN