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Data as of Nov 6, 2026

192.156.0.0/18

No anonymizer space · no proxy exits in 30 days

United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
AS721
Type
Business

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
192.156.21.0/24
since Apr 2024
AS637BusinessUnited States Department of Defense (DoD)
via Marine Corps Cyberspace Operations Group
192.156.56.0/23
since Apr 2021
AS637BusinessUnited States Department of Defense (DoD)
via Marine Corps Cyberspace Operations Group

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
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—
└ 192.156.1.0/24256USMC-DSID1unknown———
└ 192.156.3.0/24256USMC-BRGFWunknown———
└ 192.156.4.0/24256USMC-SDOFWunknown———
└ 192.156.5.0/24256USMC-CPPFWunknown———
└ 192.156.6.0/24256USMC-DSID6unknown———
└ 192.156.7.0/24256USMC-SITEDFWunknown———
└ 192.156.8.0/24256USMC-29PFWunknown———
└ 192.156.9.0/24256USMC-YMHFWunknown———
└ 192.156.10.0/24256USMC-BAMFWunknown———
└ 192.156.11.0/24256USMC-DSID11unknown———
└ 192.156.12.0/24256USMC-DSID12unknown———
└ 192.156.13.0/24256USMC-C13unknown———
└ 192.156.14.0/24256USMC-BLTFWunknown———
└ 192.156.15.0/24256USMC-RGA1unknown———
└ 192.156.16.0/24256USMC-DSID16unknown———
└ 192.156.17.0/24256USMC-DSID17unknown———
└ 192.156.19.0/24256USMC-HQMCFWunknown———
└ 192.156.20.0/24256USMC-EWTGPACFWunknown———
└ 192.156.21.0/24256USMC-SITERFWMarine Corps Cyberspace Operations Group (UNOC) · USReassignedAug 13, 2025—
└ 192.156.22.0/24256USMC-CBIRFFWunknown———
└ 192.156.25.0/24256USMC-MFEFWunknown———
└ 192.156.26.0/24256USMC-MFRFWunknown———
└ 192.156.27.0/24256USMC-AAAVFWunknown———
└ 192.156.28.0/24256USMC-GITMOFWunknown———
└ 192.156.33.0/24256USMC-MARFORKFWunknown———
└ 192.156.34.0/24256USMC-DSID34unknown———
└ 192.156.35.0/24256USMC-DSID35unknown———
└ 192.156.36.0/24256USMC-PIKFWunknown———
└ 192.156.37.0/24256USMC-CLBFWunknown———
└ 192.156.38.0/24256USMC-DSID38unknown———
└ 192.156.39.0/24256USMC-DSID39unknown———
└ 192.156.40.0/24256USMC-C40unknown———
└ 192.156.41.0/24256USMC-TPN1unknown———
└ 192.156.42.0/24256USMC-DSID42unknown———
└ 192.156.43.0/24256USMC-DSID43unknown———
└ 192.156.44.0/24256USMC-DSID44unknown———
└ 192.156.45.0/24256USMC-DSID45unknown———
└ 192.156.46.0/24256USMC-MBWFWunknown———
└ 192.156.47.0/24256USMC-MARFORSOUHunknown———
└ 192.156.48.0/24256USMC-DSID48unknown———
└ 192.156.50.0/24256USMC-DSID50unknown———
└ 192.156.51.0/24256USMC-DSID51unknown———
└ 192.156.52.0/24256USMC-C52unknown———
└ 192.156.54.0/24256USMC-DSID54unknown———
└ 192.156.56.0/24256USMC-DSID56unknown———
└ 192.156.57.0/24256USMC-DSID57unknown———
└ 192.156.58.0/24256USMC-DSID58unknown———
└ 192.156.60.0/24256USMC-DSID60unknown———
└ 192.156.61.0/24256USMC-FUJI1unknown———
└ 192.156.62.0/24256USMC-DSID62unknown———
└ 192.156.63.0/24256USMC-IWZFWunknown———

Network & registry

AnnouncementRouting historyRPKI & IRRWhois & abuse
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

AS721

US
Name
United States Department of Defense (DoD)
Type
Business
Domain
mail.mil
Industry
Internet Service Provider (ISP)
Spamhaus ASN-DROP
not listed