LAYER3 INTEL
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Data as of Nov 7, 2026

137.240.0.0/14

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
137.240.0.0/16
since Feb 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.240.250.0/24
since Feb 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.241.0.0/16
since Dec 2023
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.242.0.0/16
since Aug 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.242.245.0/24
since Aug 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.243.0.0/16
since Sep 2025
AS56BusinessUnited States Department of Defense (DoD)
via Air Force Systems Networking
137.243.255.0/24
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
137.240.0.0/1665,536OCALC-1United States Department of Defense (DoD) (USDDD) · USDirect AllocationJan 16, 1990disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 137.240.0.0/1665,536OCALC-1Air Force Systems Networking (7ESG) · USReallocatedAug 19, 2025disa.columbus.ns.mbx.arin-registrations@mail.mil
137.241.0.0/1665,536AF-AFMC-HILL-OOALC-137-241United States Department of Defense (DoD) (USDDD) · USDirect AllocationJan 16, 1990disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 137.241.0.0/1665,536AF-AFMC-HILL-OOALC-137-241Air Force Systems Networking (7ESG) · USReallocatedAug 19, 2025disa.columbus.ns.mbx.arin-registrations@mail.mil
137.242.0.0/1665,536SAALC-1United States Department of Defense (DoD) (USDDD) · USDirect AllocationJan 16, 1990disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 137.242.0.0/1665,536SAALC-1Air Force Systems Networking (7ESG) · USReallocatedAug 19, 2025disa.columbus.ns.mbx.arin-registrations@mail.mil
137.243.0.0/1665,536ROME-NETUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationMay 23, 1996disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 137.243.0.0/1665,536ROME-NETAir Force Systems Networking (7ESG) · USReallocatedAug 19, 2025disa.columbus.ns.mbx.arin-registrations@mail.mil

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