AS750

AS750 is a legacy autonomous system number registered under ARIN to Merit Network, Inc., a nonprofit research-and-education (R&E) network headquartered in Ann Arbor, Michigan, and it is currently dormant in the global routing table: BGP sources agree on zero announced IPv4 and IPv6 prefixes, with no visibility since February 11, 2022.

Merit Network is an active, independent nonprofit founded in 1966 that operates roughly 4,000 miles of fiber across Michigan and is the state's only provider with direct access to the Internet2 national research network. Merit is historically notable as the operator of NSFNET, the NSF-funded backbone that preceded the modern commercial Internet, and today serves K-12, higher-ed, government, and healthcare members with Internet transit up to 100 Gbps.

ARIN RDAP records AS750's top-level autnum registration date as 1990-10-08, with a last-changed event of 2012-04-02; RDAP shows the autnum status as Active even though the ASN itself is not currently announcing routes. CAIDA AS Rank places AS750 at 79,459 — the standard sentinel rank CAIDA assigns to unrouted ASNs — with a singleton customer cone (1 ASN, 0 prefixes, 0 addresses); bgp.tools does not surface either figure for this ASN, but CAIDA's own API does. No current upstreams or IXP memberships were found. Two historical IPv4 peers (AS136519 and AS137967, both registered in Bangladesh) appear in bgp.he.net's pre-2022 snapshot; they are geographically implausible for a Michigan R&E network and are treated here as stale or cached artifacts rather than live relationships.

Merit does not publish a standalone, PeeringDB-style peering-policy statement for AS750. The closest official source is Merit's "Peering & Caching" service page, which describes an open/selective posture available to Merit members — 10 Gbps+ capacity, Internet2 Peer Exchange (I2PX) participation, and direct connections to 100+ content and cloud providers — but this describes a member-facing program rather than a formal ASN-level policy, and it is unclear whether it applies to the dormant AS750 specifically.

Operator

Merit Network, Inc. (nonprofit R&E network; ARIN handle references MERIT-AS-16, Ann Arbor, MI) [Confirmed] — ARIN RDAP (rdap.arin.net/registry/autnum/750), merit.edu/about

Country / RIR

US, ARIN [Confirmed] — ARIN RDAP

Allocated

1990-10-08 (ARIN RDAP autnum top-level registration event for AS750 — first-party RIR fact, not IANA/IEEE-sourced); last changed 2012-04-02 [Confirmed] — ARIN RDAP top-level events

Org status

active independent nonprofit corporation, founded 1966; RDAP autnum status = Active [Confirmed] — merit.edu/about, ARIN RDAP

Contacts

abuse@merit.edu (per ARIN RDAP registration remarks) [Confirmed] — ARIN RDAP

Security/abuse context (NEUTRAL, DATED, search-limited)

no notable public abuse signal found for AS750 as of 2026-07-28 — NANOG mail-archive search returned 0 matches, a guessed Spamhaus ASN-DROP URL 404'd, and general web search was capped by session quota exhaustion; treat as Unknown rather than confirmed-clean

Network & routing

Network type

independent nonprofit R&E network serving Michigan with national/international R&E connectivity (Internet2); also offers commercial-facing services (Internet transit to 100 Gbps, peering/caching, managed security) [Confirmed] — merit.edu/about, merit.edu/solutions/networking-security/internet

Size / routing

dormant — 0 IPv4 and 0 IPv6 announced prefixes (RIPEstat announced_space.v4: 0 prefixes, 0 addresses); not visible in the global routing table since 2022-02-11 [Confirmed] — bgp.he.net/AS750, bgp.tools/as/750, RIPEstat routing-status. CAIDA AS rank 79,459 (the standard sentinel rank for unrouted ASNs; not seen, not clique member); customer cone is a singleton — 1 ASN, 0 prefixes, 0 addresses

[Confirmed] — api.asrank.caida.org/v2/restful/asns/750

Routing/peering

no current upstreams or peers listed; two historical IPv4 peers (AS136519, AS137967, both Bangladesh) predate the 2022 dropout and are flagged low-reliability/geographically implausible [Confirmed for absence of current peers; Unknown reliability for historical peers] — bgp.he.net/AS750. No explicit ASN-level peering-policy document found; Merit's member-facing Peering & Caching program describes an open/selective posture

[Likely] — merit.edu/solutions/networking-security/peering-caching

RPKI

Unknown — no RPKI/ROA validation data surfaced by bgp.he.net or bgp.tools for this ASN [Unknown]

Notable usage

Merit operates ~4,000 miles of fiber across Michigan, is the state's only provider with direct Internet2 access, and historically managed NSFNET, the NSF-funded predecessor to the modern commercial Internet [Confirmed] — merit.edu/about, merit.edu/solutions/networking-security/internet

Related ASNs

none specifically confirmed for AS750 in this research round; Merit is known from prior Merit-ASN research to hold a broader numeric block that includes the AS750–759 range, but no direct AS750-to-sibling-ASN link was independently verified here [Unknown]

Analyst note

AS750 is a dormant/legacy Merit Network ASN — WHOIS/RDAP resolves cleanly to an active nonprofit operator, but the ASN itself has announced nothing since February 2022. Historical BGP peer data (Bangladesh-registered ASNs) is treated as stale and excluded from current-state claims. Search-budget exhaustion limited the depth of the community/abuse corroboration angle this cycle. as_rank, customer_cone_size, and ipv4_address_estimate are filled from CAIDA AS Rank and RIPEstat this cycle rather than left null — a gap in one third-party viewer (bgp.tools) is not a canonical absence.