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Data as of Nov 3, 2026

131.4.0.0/15

No anonymizer space

United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
AS721
Type
Business

Announcements

More specific

Announcements inside

PrefixOriginTypeHolderRPKI
131.5.48.0/21
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
131.5.56.0/22
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
131.5.56.0/24
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
131.5.57.0/24
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
131.5.60.0/22
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking

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
131.4.0.0/1665,536WPAFB-NETunknown———
└ 131.4.0.0/1665,536WPAFB-NETAir Force Systems Networking (7ESG) · USAllocationAug 18, 2025[email protected]
131.5.0.0/1665,536GRIFFISS-NETUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationSep 8, 1988[email protected]
└ 131.5.0.0/1665,536GRIFFISS-NETAir Force Systems Networking (7ESG) · USReallocatedAug 18, 2025[email protected]

Network & registry

AnnouncementRouting historyWhois & abuse
Registry

Holder

Organization
Not stated by the registry
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