Data as of Nov 3, 2026
55.74.0.0/16
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 |
|---|---|---|---|---|
| 55.74.6.0/24 since Apr 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.41.0/24 since Sep 2025 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.42.0/24 since Sep 2025 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.44.0/23 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.46.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.47.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.48.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.49.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.52.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.53.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.54.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.55.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.58.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.59.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.64.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.65.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.66.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.67.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.68.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.69.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.70.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.71.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.72.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.73.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.74.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.75.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.76.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.78.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.79.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.80.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.82.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.83.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.84.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.85.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.86.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.90.0/24 since Jun 2022 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.91.0/24 since Jun 2022 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.94.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.95.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.96.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.97.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.99.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.100.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.103.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.104.0/24 since Nov 2025 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.107.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.108.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.111.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.112.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.113.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.116.0/24 since Dec 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.117.0/24 since Dec 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.118.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.119.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.120.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.121.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.122.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.124.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.125.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.126.0/24 since Aug 2025 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.129.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.130.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.136.0/22 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.143.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.146.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.147.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.148.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.149.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.152.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.153.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.155.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.156.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.157.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.158.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.160.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.161.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.166.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.167.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.168.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.169.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.170.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.171.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.172.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.173.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.175.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.176.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.177.0/24 since Nov 2024 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.180.0/24 since Jun 2022 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.192.0/24 since Apr 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.193.0/24 since Aug 2021 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.194.0/24 since Oct 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.195.0/24 since Apr 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.196.0/24 since Apr 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.197.0/24 since Apr 2019 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.198.0/24 since May 2022 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.199.0/24 since Aug 2025 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.206.0/23 since May 2023 | AS335 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 55.74.208.0/21 since Apr 2019 | AS335 | 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 | [email protected] |
| └ 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
AS335
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
- Mar 2009 · 18 yr
- Origin networks
- 2
- Last change of origin
- Mar 2009
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
- [email protected]
- Name
- Network DoD
- Phone
- +1-844-347-2457
- Handle
- MIL-HSTMST-ARIN