AS787

AS787 is a dormant autonomous system number registered to the United States Department of Defense (DNIC-AS-00787), administered through the DoD Network Information Center (DoD NIC) out of DISA-Columbus, Ohio, and it currently announces zero IPv4 and zero IPv6 prefixes across every routing source checked.

ARIN RDAP records the autnum's top-level registration event as 1990-11-20, with a last-changed date of 2025-09-12; the registrant of record is org handle USDDD, "United States Department of Defense (DoD)", 3990 E. Broad Street, Columbus, OH 43218 — 300 North James Road, Whitehall, OH 43213 is the address on the administering DoD NIC point-of-contact vCards, not the registrant's. RIPEstat, CAIDA AS Rank, bgp.he.net, and bgp.tools all agree the ASN is unannounced: 0/328 RIS peers see it in IPv4, 0/322 in IPv6, and CAIDA's asnDegree fields (customer, peer, provider) are all zero.

CAIDA's customer cone for AS787 is a singleton — the ASN itself, 0 prefixes, 0 addresses — with an AS rank of 79,459 and seen:false, meaning it does not appear in CAIDA's observed topology graph. No PeeringDB network profile exists for AS787. For comparison, a sibling DoD NIC ASN, AS367, actively peers with roughly 14 networks, which supports reading AS787 as a legacy or reserved block within the DoD's larger ASN portfolio rather than an actively routed network today.

Secondary sources (Wikipedia) associate DISA's operational internet-facing network with NIPRNet, but no operator-official DISA page could be fetched to confirm that AS787 specifically maps to NIPRNet, so that link is tagged Likely rather than Confirmed. DISA's own site returned authenticated-portal shells or 403/404 responses on every path attempted.

Operator

United States Department of Defense (DoD), registered as DNIC-AS-00787, administered via the DoD Network Information Center (DoD NIC), DISA-Columbus, Whitehall, OH [Confirmed] — https://rdap.arin.net/registry/autnum/787

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/787

Allocated

1990-11-20 (ARIN RDAP autnum top-level registration event); last changed 2025-09-12 [Confirmed] — https://rdap.arin.net/registry/autnum/787

Org status

active (ARIN RDAP autnum status) [Confirmed] — https://rdap.arin.net/registry/autnum/787

Contacts

disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil (abuse); disa.columbus.ns.mbx.arin-registrations@mail.mil (registration); phone +1-844-347-2457 ext2; HQ 300 North James Road, Whitehall, OH 43213 [Confirmed] — https://rdap.arin.net/registry/autnum/787

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-08-01; no ipapi.is abuser score, AbuseIPDB has no dedicated AS787 page (404), no on-topic NANOG mentions; no hijack or route-leak history found in the sources consulted, though coverage of historical incident reporting is partial

Network & routing

Network type

US DoD network; commonly associated with NIPRNet per secondary sources only, not confirmed via an operator-official DISA page for this specific ASN [Likely] — https://en.wikipedia.org/wiki/Defense_Information_Systems_Agency

Size

dormant/unannounced — 0 IPv4 prefixes / 0 IPv4 addresses, 0 IPv6 prefixes; customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — https://stat.ripe.net/AS787, https://asrank.caida.org/asns/787

Routing/peering

NOT announced — 0/328 RIS peers see it in IPv4, 0/322 in IPv6; CAIDA asnDegree total 0 (customer 0, peer 0, provider 0); no PeeringDB network profile exists [Confirmed] — https://stat.ripe.net/AS787, https://asrank.caida.org/asns/787, https://www.peeringdb.com/api/net?asn=787

RPKI

not assessable — zero announced prefixes means no ROAs to validate; RIPEstat rpki-validation query was skipped (requires a prefix) [Unknown] — https://stat.ripe.net/AS787

Notable usage

not confirmed via an operator-official source for this specific ASN; secondary sources tie DISA's NIPRNet to the DoD's primary unclassified internet-facing network generally [Likely] — https://en.wikipedia.org/wiki/Defense_Information_Systems_Agency

Related ASNs

other DoD Network Information Center ASNs, e.g. AS367 (actively peers with ~14 networks) and AS749 (also DoD, lacks RPKI per bgp.tools) [Likely] — https://bgp.tools/as/367, https://bgp.tools/as/749

Analyst note

encountered as a dormant/legacy-looking DoD ASN — WHOIS/RDAP resolves cleanly to DoD NIC but the ASN currently announces nothing; comparison to sibling AS367 (actively peered) supports a legacy/reserved read rather than active routing infrastructure.