Data as of Nov 3, 2026
155.6.0.0/16
No anonymizer space · no proxy exits in 30 daysHeadquarters, USAISC · reallocated from United States Department of Defense (DoD)
Announcements
Nesting
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More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 155.6.20.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.21.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.22.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.23.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.24.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.25.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.26.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.27.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.28.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.29.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.30.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.31.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.32.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.33.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.35.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.37.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.39.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.40.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.41.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.42.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.48.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.51.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.53.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.55.0/24 since May 2026 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.56.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.57.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.58.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.98.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.200.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.210.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.216.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.217.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.218.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.219.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.220.0/24 since Mar 2024 | AS1637 | Business | United States Department of Defense (DoD) via Headquarters, USAISC | |
| 155.6.243.0/24 since Mar 2024 | AS1637 | 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 |
|---|---|---|---|---|---|---|
| 155.6.0.0/16 | 65,536 | YOKOHAMA-NET | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | Jan 13, 1992 | [email protected] |
| └ 155.6.0.0/16 | 65,536 | YOKOHAMA-NET | Headquarters, USAISC (HEADQU-3) · US | Reallocated | Aug 23, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 155.6.0.0/16
- Registration type
- Direct Allocation
- Record created
- Jan 13, 1992
- Legacy
- yes
- Reallocated to
- Headquarters, USAISC (HEADQU-3)
- Reallocated
- Aug 23, 2025
Origin network
AS1637
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
- Reactivated
- First seen
- May 2005
- Current origin since
- May 2025 · 1.5 yr
- Origin networks
- 4
- Last change of origin
- May 2025
Recorded history
History
- Handoffs
- 6
Whois
Registration for this announcement
- Range
- 155.6.0.0/16
- Netname
- YOKOHAMA-NET
- 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-155-6-0-0-2
- Parent
- NET-155-6-0-0-1
- Created
- Aug 23, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- Jan 13, 1992
- Status
- assigned
Report abuse
Abuse contact
- [email protected]
- Name
- No, Contact Known
- Phone
- +1-800-555-1234
- Handle
- CKN23-ARIN