AS687

AS687 is an active, thinly-routed autonomous system registered to the United States Department of Defense that currently announces five IPv4 prefixes and one IPv6 block — a live but minimal military stub network, not a dormant legacy ASN.

The registry record traces to 1990-06-21, the ARIN RDAP autnum's top-level registration event, making AS687 a 36-year-old allocation. The registrant is the U.S. Department of Defense (org handle USDDD, ASN name DNIC-AS-00687), administratively contacted through DISA-Columbus at Whitehall, OH; the record was last updated 2025-09-12.

Live routing covers 214.16.216.0/22, 160.107.0.0/16, 192.73.215.0/24, 199.211.198.0/24, and 206.39.203.0/24 in IPv4 (roughly 67,328 addresses), plus the IPv6 block 2001:480:240::/48, which third-party BGP data describes as designated for High Performance Computing use. bgp.he.net and bgp.tools show a single visible peer/upstream, AS668 (DoD High Performance Computing / DREN), consistent with a stub endpoint network rather than a transit AS.

No public PeeringDB net object exists for AS687, so peering policy and ratio are unknown rather than fabricated. AS687 should not be confused with AS8003 ("GRS-DoD"), the separate ASN behind the well-documented January 2021 episode where long-dormant DoD IPv4 space began being announced by Global Resource Systems, LLC — no source ties that incident to AS687.

Operator

United States Department of Defense (org handle USDDD); ASN registration name DNIC-AS-00687 [Confirmed] — https://rdap.arin.net/registry/autnum/687

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/687

Allocated

1990-06-21 (ARIN RDAP autnum top-level registration event); last changed 2025-09-12 [Confirmed] — https://rdap.arin.net/registry/autnum/687

Org status

active in ARIN registry [Confirmed] — https://rdap.arin.net/registry/autnum/687

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (abuse); DISA-Columbus, 300 North James Road, Whitehall, OH 43213 [Confirmed] — https://rdap.arin.net/registry/autnum/687

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal as of 2026-07-18 — not on Spamhaus ASN-DROP, no matching NANOG archive threads

Network & routing

Network type

U.S. federal government / military stub network, administered via DISA-Columbus (DoD Network Information Center lineage); no operator-specific DISA page names AS687 directly [Likely] — https://www.disa.mil/, https://en.wikipedia.org/wiki/Defense_Information_Systems_Agency

Size

5 IPv4 prefixes (~67,328 addresses: one /16, one /22, three /24s) + 1 IPv6 /48 (HPC-designated) [Confirmed] — https://bgp.he.net/AS687, https://bgp.tools/as/687, https://stat.ripe.net/AS687

Routing/peering

single visible peer/upstream AS668 (DoD HPC / DREN) for both v4 and v6; no PeeringDB net object exists for AS687 (404) [Confirmed for peer; Confirmed for PeeringDB absence] — https://bgp.he.net/AS687, https://bgp.tools/as/687, https://www.peeringdb.com/asn/687

RPKI

no ROAs published; 0 RPKI-valid and 0 RPKI-invalid originations reported (ROV not implemented) [Confirmed] — https://bgp.he.net/AS687

Notable usage

DoD Network Information Center (DNIC) ASN; IPv6 /48 flagged by third-party BGP data as High Performance Computing use; distinct from AS8003, the ASN behind the 2021 Global Resource Systems dormant-space BGP episode

[Confirmed distinction] — https://bgp.tools/as/687, https://www.kentik.com/blog/the-mystery-of-as8003/

Related ASNs

AS668 (upstream, DoD HPC/DREN) [Likely]; explicitly NOT AS8003 (unrelated DoD-linked ASN, see security note) — https://bgp.tools/as/687

Analyst note

Active DoD stub ASN with a first-party 1990-06-21 ARIN allocation date read from the autnum top-level events (decoy entity-level dates of 1993-05-26, 2009-06-24, and 2007-01-12 correctly excluded). No PeeringDB presence, no AS rank/customer cone published, no abuse signal found.