Data as of Nov 6, 2026

198.154.16.0/21

No anonymizer space · no proxy exits in 30 days

United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
Type
Business
Risk
0 / 100 · Low

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.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
198.154.16.0 - 198.154.25.2552,560NAWCADLKEUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationJun 4, 1993disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 198.154.16.0 - 198.154.25.2552,560NAWCADLKENavy Network Information Center (NNIC) (NNICN-1) · USReallocatedAug 19, 2025—
└ 198.154.16.0/24256NAWCADLKE3unknown———
└ 198.154.17.0/24256NAWCADLKE4unknown———
└ 198.154.18.0/24256NAWCADLKE5unknown———
└ 198.154.19.0/24256NAWCADLKE6unknown———
└ 198.154.20.0/24256NAWCADLKE7unknown———
└ 198.154.21.0/24256NAWCADLKE8unknown———
└ 198.154.22.0/24256NAWCADLKE9unknown———
└ 198.154.23.0/24256NAWCADLKE10unknown———

Network & registry

Registry

Holder

Organization
United States Department of Defense (DoD)
Handle
USDDD
Range
198.154.16.0 - 198.154.25.255
Registration type
Direct Allocation
Record created
Jun 4, 1993
Legacy
yes
Reallocated to
Navy Network Information Center (NNIC) (NNICN-1)
Reallocated
Aug 19, 2025
Origin network

AS668

US
Name
United States Department of Defense (DoD)
Type
Business
Registered
Apr 24, 1990
Domain
mail.mil
Website
www.hpc.mil/solution-areas/networking
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed