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Data as of Nov 6, 2026

192.156.56.0/24

No anonymizer space · no proxy exits in 30 days

United States Department of Defense (DoD)

Announcement
192.156.56.0/23
No RPKI
Announced by
AS637
Type
Business
Risk
0 / 100 · Low

Announcements

Less specific

Covering announcements

PrefixOriginTypeHolderRPKI
192.156.0.0/18
since Dec 2010
AS721BusinessUnited States Department of Defense (DoD)
via Marine Corps Cyberspace Operations Group

Registrations in this block

The registry's network records over this block, widest first, each under its parent.

RangeAddressesNetnameHolderTypeCreatedAbuse contact
192.156.0.0 - 192.156.80.25520,736USMC-CUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationApr 8, 1992disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 192.156.0.0 - 192.156.80.25520,736USMC-CMarine Corps Cyberspace Operations Group (UNOC) · USReallocatedAug 13, 2025—
└ 192.156.56.0/24256USMC-DSID56unknown———

Network & registry

AnnouncementRouting historyWhois & abuse
Announced by

Covering announcement 192.156.56.0/23

Prefix
192.156.56.0/23
Announced by
AS637 United States Department of Defense (DoD)
Type
Business
RPKI
No RPKI
Netname
USMC-C
Registrant
Marine Corps Cyberspace Operations Group
RIR
ARIN
Registry

Holder

Organization
United States Department of Defense (DoD)
Handle
USDDD
Range
192.156.0.0 - 192.156.80.255
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