LAYER3 INTEL
Get started
Sign in
Data as of Nov 10, 2026

158.63.4.0/24

No anonymizer space · no proxy exits in 30 days

Defense Advanced Research Projects Agency(DARPA) · space held by United States Department of Defense (DoD)

Announcement
this exact prefix
No RPKI
Announced by
AS22238
Type
Business
Risk
0 / 100 · Low
Recent change
New origin Jul 2026
its first announcement on record

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
158.63.0.0/1665,536DARPA-NETUnited States Department of Defense (DoD) (USDDD) · USDirect AllocationFeb 14, 1992disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
└ 158.63.0.0/1665,536DARPA-NETDoD Network Information Center (DNIC) · USReallocatedSep 4, 2025disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil

Network & registry

AnnouncementRouting historyWhois & abuse
Registry

Holder

Organization
United States Department of Defense (DoD)
Handle
USDDD
Range
158.63.0.0/16
Registration type
Direct Allocation
Record created
Feb 14, 1992
Legacy
yes
Reallocated to
DoD Network Information Center (DNIC)
Reallocated
Sep 4, 2025
Origin network

AS22238

US
Name
Defense Advanced Research Projects Agency(DARPA)
Type
Education
Registered
Aug 23, 2001
Domain
darpa.mil
Industry
Museums, Libraries, and Entertainment
Spamhaus ASN-DROP
not listed