AS217

AS217 is a legacy autonomous system number registered under ARIN to the University of Minnesota, operated by the University's Office of Information Technology (OIT). It is one of the earliest 16-bit ASNs assigned out of ARIN's 1–1876 block, with an ARIN RDAP autnum top-level registration date of 1988-07-25. The ASN serves the University of Minnesota System Network — five campuses statewide plus numerous affiliated facilities — and presents a textbook institutional stub topology: it announces five IPv4 /16 blocks (128.101.0.0/16, 131.212.0.0/16, 134.84.0.0/16, 146.57.0.0/16, 160.94.0.0/16; roughly 327,680 addresses) and a single IPv6 /48 (2001:470:22::/48). Routing is single-homed through AS57 (Northern Lights GigaPoP), itself operated by the University of Minnesota OIT, which manages all of AS217's peering and connects it onward to Internet2, regional R&E networks (WiscNet, Great Plains Network), and commodity carriers (Hurricane Electric, Cogent, Lumen/Level 3, Telia). The Northern Lights GigaPoP also fronts connectivity for 50+ institutions including Minnesota State Colleges and Universities, private colleges, and Mayo Clinic. PeeringDB records an open peering policy (no ratio, contract, or location requirements) and a 20–50 Gbps, mostly-inbound traffic profile. Security posture is clean as of 2026-06-19: AS217 is absent from the Spamhaus ASN-DROP list, carries a valid RPKI ROA on its IPv6 prefix, and appears in no NANOG routing-abuse threads. The University's separately disclosed 2021–2023 data-warehouse breach was an application-layer compromise unrelated to AS217's routing.

Operator

University of Minnesota; network run by the Office of Information Technology (OIT), 2218 University Ave SE, Minneapolis, MN 55414 [Confirmed] — ARIN RDAP autnum/217, it.umn.edu

Country / RIR

US, ARIN [Confirmed] — RIPEstat abuse-contact-finder (authoritative_rir: arin), ARIN RDAP

Allocated

1988-07-25 (ARIN RDAP autnum top-level registration event — a first-party RIR fact, NOT an IEEE date); last changed 2025-03-31 [Confirmed] — ARIN RDAP autnum top-level events

Org status

public research university (University of Minnesota System), a public institution of the State of Minnesota; non-commercial education/research operator [Confirmed] — it.umn.edu

Contacts

abuse@umn.edu (UIS — University Information Security, 90 Church St SE, Minneapolis, MN 55455); NOC/TAC tac-nts-list@umn.edu, +1-612-301-4357 [Confirmed] — ARIN RDAP autnum/217, RIPEstat abuse-contact-finder

Security/abuse context (NEUTRAL, DATED)

no notable public network-level abuse signal as of 2026-06-19 — absent from Spamhaus ASN-DROP, no NANOG routing-abuse threads, clean RPKI/IRR; the University's 2021–2023 Legacy Data Warehouse breach (~4.2M individuals) was an application/database compromise unrelated to AS217 routing

Network & routing

Network type

education / research — institutional stub AS serving the University of Minnesota System (five campuses statewide); does not provide transit [Confirmed] — ipinfo.io/AS217, peeringdb.com/net/38899

Size

5 IPv4 /16 prefixes (~327,680 addresses) + 1 IPv6 /48; prefixes 128.101.0.0/16, 131.212.0.0/16, 134.84.0.0/16, 146.57.0.0/16, 160.94.0.0/16, 2001:470:22::/48 [Confirmed] — ARIN RDAP, bgp.he.net/AS217, ipinfo.io/AS217

Routing/peering

announced and fully visible (RIS); single upstream/peer is AS57 (Northern Lights GigaPoP, University of Minnesota OIT), which manages all peering — stub topology, no multi-homing, no downstream customers [Confirmed for upstream; customer-cone "none visible" Likely] — bgp.he.net/AS217, peeringdb.com/net/38899

Peering policy

Open per PeeringDB (no ratio, contract, or multi-location requirement); managed via Northern Lights GigaPoP (AS57) [Confirmed] — peeringdb.com/net/38899

RPKI

IPv6 prefix 2001:470:22::/48 is RPKI-valid; IPv4 ROA status not fully confirmed (bgp.he.net notes a bogon flag on one /16) [Likely] — bgp.he.net/AS217, bgp.tools/as/217

Notable usage

connects the University of Minnesota system to Internet2, R&E networks (WiscNet, Great Plains Network), and commodity carriers (Hurricane Electric, Cogent, Lumen, Telia) via Northern Lights GigaPoP (AS57), which also serves 50+ institutions incl. MnSCU, private colleges, and Mayo Clinic

[Confirmed] — it.umn.edu Internet2/GigaPoP pages, peeringdb.com/net/38899

Related ASNs

AS57 (Northern Lights GigaPoP, University of Minnesota OIT) — sole upstream and peering manager [Confirmed] — bgp.he.net/AS217, peeringdb.com/net/38899

ARIN handle / AS name

UMN-SYSTEM (autnum handle AS217) [Confirmed] — ARIN RDAP autnum/217

Traffic profile

20–50 Gbps, mostly inbound, regional scope, business-hours academic pattern [Likely] — peeringdb.com/net/38899

Analyst note

Encountered as an early-allocated, actively routed institutional stub ASN under a major R&E operator. The entity-level registration event 2009-10-13 (org handle UNIVER-233-Z) is a decoy — the autnum top-level 1988-07-25 is the correct allocated_date.