Data as of Nov 12, 2026
55.75.0.0/16
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 55.0.0.0/8 | AS721 | Business | United States Department of Defense (DoD) via Headquarters, USAISC |
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 |
|---|---|---|---|---|
| 55.75.63.0/24 since Oct 2025 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.65.0/24 since Jan 2026 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.168.0/21 since Jan 2026 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.217.0/24 since Jun 2022 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.219.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.222.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.223.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.224.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.225.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.226.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.227.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.228.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.229.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.230.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.231.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.232.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.233.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.234.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.235.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.236.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.237.0/24 since Apr 2019 | AS336 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.75.238.0/24 since Apr 2019 | AS336 | 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 |
|---|---|---|---|---|---|---|
| 55.0.0.0/8 | 16,777,216 | CONUS-RCAS | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Oct 26, 1996 | disa. |
| └ 55.0.0.0/8 | 16,777,216 | CONUS-RCAS | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 20, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 55.
0. 0. 0/ 8 - Registration type
- Direct Allocation
- Record created
- Oct 26, 1996
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 20, 2025
Origin network
AS336
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Registered
- Jun 30, 1989
- Domain
- mail.mil
- Industry
- Military, Defense, National Security, and International Affairs
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Jan 2017 · 9.8 yr
- Origin networks
- 2
- Last change of origin
- Aug 2008
Recorded history
History
- Handoffs
- 1
Whois
Registration for this announcement
- Range
- 55.
0. 0. 0/ 8 - Netname
- CONUS-RCAS
- 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-55-0-0-0-2
- Parent
- NET-55-0-0-0-1
- Created
- Aug 20, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 26, 1996
- Status
- assigned
Report abuse
Abuse contact
- disa.
columbus. ns. mbx. hostmaster-dod-nic@ mail. mil - Name
- Network DoD
- Phone
- +1-844-347-2457
- Handle
- MIL-HSTMST-ARIN