AS5132 — DNIC-ASBLK-05120-05376

AS5132 announces 0 IPv4 prefixes covering 0 addresses and 4 IPv6 prefixes.

About this network

A US Department of Defense network from the block DNIC-ASBLK-05120-05376, registered to the DoD Network Information Center (DNIC).

What it's used for

• DoD research networking. Everything it originates comes from 2001:480::/32, the address range of the Defense Research and Engineering Network (DREN), whose blocks are registered to the DoD's High Performance Computing program.

Notable

• A government / military network, not a commercial ISP or host.
• Unusually, this ASN announces only IPv6 — a handful of /48s and no IPv4 at all, which is why its IPv4 count is zero.
• The generic DNIC block registration does not name a specific base or unit beyond the Department of Defense.

Interesting

• DREN is the DoD's high-performance computing and research backbone, and it was an early and aggressive adopter of IPv6 within the US federal government. An IPv6-only ASN is a fingerprint of that lineage.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 2001:480:a0::/47
• 2001:480:aa::/47
• 2001:480:b0::/48
• 2001:480:1801::/48

Upstream networks

• AS668 United States Department of Defense (DoD)

Adjacent networks

• AS668 United States Department of Defense (DoD)