AS148

AS148 is a legacy U.S. military Autonomous System Number registered through ARIN to the Navy Network Information Center (NNIC), the U.S. Navy's network administration entity, with the registrant address at 2465 Guadalcanal Road, Building 1265, Virginia Beach, VA. Its ARIN handle is DNIC-AS-00148, where the "DNIC" prefix reflects the Defense Network Information Center naming convention applied to many Department of Defense ASNs from the early-Internet era. The ARIN autnum record carries a registration event of 1987-12-24, which places AS148 among the earliest autonomous systems ever allocated; this is the ARIN registry date and is not an IEEE date (IEEE publishes no ASN registration dates). Despite the active "active" status in ARIN's registry, AS148 is operationally dormant: as of 2026-06-15 it originates zero IPv4 and zero IPv6 prefixes, is seen by none of the 327 RIPEstat RIS peers (IPv4) or 319 peers (IPv6), and CAIDA records a customer cone of just one ASN (itself) with no prefixes, no addresses, and an AS-degree of zero for providers, peers, and customers. Administrative and abuse contact is routed through DISA-Columbus (300 North James Road, Whitehall, OH), a common DoD registration pattern. No notable public abuse signal was found across Spamhaus, AbuseIPDB, CleanTalk, FireHOL/Emerging Threats, or NANOG archives as of June 2026 — unsurprising for an ASN that announces no routable space. A frequent point of confusion is Merit Network, which is a separate Michigan academic network holding other ASNs and is not associated with AS148.

Operator

Navy Network Information Center (NNIC), a U.S. Navy / Department of Defense entity; registrant handle NNICN-1, 2465 Guadalcanal Road, Bldg 1265, Virginia Beach, VA 23459 [Confirmed] — ARIN RDAP

Country / RIR

US, ARIN [Confirmed] — rdap.arin.net/registry/autnum/148

Allocated

ARIN autnum registration event 1987-12-24 (registry date, NOT an IEEE date — IEEE publishes none); autnum last changed 2011-07-05 per RDAP (bgp.tools reports a record refresh 2025-03-13) [Confirmed for the shown dates]

Org status

active holder (U.S. Navy / NNIC, a federal government entity); ASN allocated, not returned/reclaimed; abuse contact disa.columbus.ns.mbx.arin-registrations@mail.mil via DISA-Columbus, Whitehall, OH [Confirmed] — ARIN RDAP

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-06-15 across Spamhaus (SBL/XBL/DROP/ASN-DROP), AbuseIPDB, CleanTalk, FireHOL/Emerging Threats, or NANOG archives; absence is consistent with an unrouted ASN

Network & routing

Network type

dormant DoD/Navy legacy ASN — allocated in ARIN but not present in the global routing table (0 prefixes originated) [Confirmed] — bgp.tools / RIPEstat

Size

none routed — 0 IPv4 prefixes, 0 IPv6 prefixes, ~0 addresses; CAIDA customer cone = 1 ASN (itself), 0 prefixes, 0 addresses [Confirmed] — RIPEstat routing-status / CAIDA AS Rank

Routing/peering

no upstreams, no peers, no downstream customers (AS-degree provider=0, peer=0, customer=0); not present in PeeringDB (404); no documented peering policy for AS148 [Confirmed for the relationship counts; peering policy Unknown] — CAIDA / bgp.he.net / PeeringDB

RPKI

Unknown / not assessable — no announced prefixes to validate; rpki-validation skipped (requires a prefix); bgp.he.net shows 0 valid and 0 invalid origins, consistent with no active announcements [Confirmed that no route exists to validate]

Notable usage

one of roughly 85–97 ASNs assigned to NNIC across the ARIN registry (source estimates vary); registered 1987-12-24, among the earliest ASNs from the ARPANET-era allocation; currently originates no routes — navy.mil (associated domain; no dedicated public NNIC site found) [Confirmed for registration/dormancy; ASN-count is a source-variable estimate]

Related ASNs

NNIC operates many other DoD ASNs (e.g., AS22, AS37, AS48, AS84, AS257, AS592, AS788, AS1993, AS2749) [Confirmed for the listed handles' NNIC association] — networksdb.io / ipinfo.io

IXP presence

none — CAIDA ixp field null; bgp.he.net and bgp.tools report no IXP participation [Confirmed]

Analyst note

Distinct from Merit Network (a Michigan academic/research network holding separate ASNs such as AS237/AS751) — a common lookup confusion. AS148 is a clean, dormant U.S. military legacy ASN with no public-facing operator website, about page, or IR page.