AS4010 DNIC-AS-04010

DNIC-AS-04010 is one of the United States military's DNIC-prefixed autonomous

systems. The ARIN registrant is recorded as "Headquarters, USAISC", the U.S.

Army Information Systems Command.

What it's used for

• Military network operations. The DNIC (Defense Network Information Center) naming convention marks the whole family of U.S. Department of Defense autonomous systems, of which this is one.
• Public registry data does not describe the specific mission, sites, or systems behind it, and nothing further should be read into the number itself.

Notable

• The address footprint is very large by any measure: over a million IPv4 addresses sit behind this single ASN, a scale seen almost only in DoD and legacy carrier networks.
• The registrant name is a historical artifact. USAISC was established in 1984 at Fort Huachuca, Arizona, redesignated U.S. Army Signal Command in 1996, and its centralised network role passed to the U.S. Army Network Enterprise Technology Command (NETCOM) in 2002. The registry entry kept the old name.

Interesting

• DoD holds an unusually deep pool of legacy IPv4, and low, contiguous ASNs like this one are part of the same early-allocation inheritance.