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Data as of Nov 3, 2026

158.243.133.0/24

No anonymizer space · no proxy exits in 30 days

United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
AS637
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
158.243.0.0/16
since Apr 2021
AS637BusinessUnited States Department of Defense (DoD)
via Marine Corps Cyberspace Operations Group
158.240.0.0/14
since Dec 2010
AS721Business

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
158.243.0.0/1665,536USMC-MARFORRESUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationApr 8, 1992[email protected]
└ 158.243.0.0/1665,536USMC-MARFORRESMarine Corps Cyberspace Operations Group (UNOC) · USReallocatedAug 13, 2025[email protected]

Network & registry

AnnouncementRouting historyWhois & abuse
Registry

Holder

Organization
United States Department of Defense (DoD)
Handle
USDDD
Range
158.243.0.0/16
Registration type
Direct Allocation
Record created
Apr 8, 1992
Legacy
yes
Reallocated to
Marine Corps Cyberspace Operations Group (UNOC)
Reallocated
Aug 13, 2025
Origin network

AS637

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