Data as of Nov 13, 2026
205.58.0.0/20
No anonymizer space · no proxy exits in 30 daysUnited States Department of Defense (DoD)
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 205.56.0.0/13 since Dec 2010 | AS721 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) |
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 |
|---|---|---|---|---|
| 205.58.1.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.2.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.3.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.4.0/23 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.8.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.10.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.11.0/24 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) | |
| 205.58.12.0/22 since Jun 2025 | AS647 | Business | United States Department of Defense (DoD) via Navy Network Information Center (NNIC) |
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 |
|---|---|---|---|---|---|---|
| 205. | 4,063,232 | NETBLK-NIC-BLK1 | United States Department of Defense (DoD) (USDDD) · US | Direct Allocation | May 18, 1998 | disa. |
| └ 205. | 4,063,232 | NETBLK-NIC-BLK1 | Navy Network Information Center (NNIC) (NNICN-1) · US | Reallocated | Aug 15, 2025 | — |
Network & registry
Registry
Holder
- Organization
- United States Department of Defense (DoD)
- Handle
- USDDD
- Range
- 205.
56. 0. 0 - 205. 117. 255. 255 - Registration type
- Direct Allocation
- Record created
- May 18, 1998
- Reallocated to
- Navy Network Information Center (NNIC) (NNICN-1)
- Reallocated
- Aug 15, 2025
Origin network
AS647
US
- Name
- United States Department of Defense (DoD)
- Type
- Business
- Registered
- Apr 19, 1990
- 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
- Apr 2026
- Current origin since
- Apr 2026 · 7 mo
- Origin networks
- 1
Whois
Registration for this announcement
- Range
- 205.
56. 0. 0 - 205. 117. 255. 255 - Netname
- NETBLK-NIC-BLK1
- Registrant
- Navy Network Information Center (NNIC)
- Organization
- Navy Network Information Center (NNIC) (NNICN-1)
- Org address
- 2465 GUADALCANAL ROAD, VIRGINIA BEACH, VA, 23459
- Org country
- US
- Type
- Reallocated
- Handle
- NET-205-56-0-0-2
- Parent
- NET-205-56-0-0-1
- Created
- Aug 15, 2025
- RIR
- ARIN
- Country
- US
- Delegated
- May 18, 1998
- 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