AS589

AS589 is an autonomous system number registered under ARIN to the University of North Texas (org handle UNT-Z), operationally run by UNT System Information Technology, the centralized IT division of the UNT System headquartered at 1112 Dallas Drive, Suite 4200, Denton, TX 76205. The top-level ARIN RDAP autnum record for AS589 shows a registration event dated 1990-02-12, making this a long-standing legacy-era educational ASN, with a "last changed" record event of 2026-03-04. AS589 is an active, announcing campus network rather than a dormant/legacy shell: routing sources agree it originates 3-4 IPv4 prefixes (roughly 129.120.0.0/16, ~65,536 addresses) and 1 IPv6 prefix (2620:101:1000::/42), with valid RPKI ROAs on both. It reaches the wider Internet through upstreams AS22645 and AS16905 (LEARN, the Texas regional research-and-education network), AS7459 (Grande Communications Networks), and AS62728 (VELOCITY, a managed services company) — consistent with a campus network that connects to Internet2/national R&E infrastructure via its regional R&E network rather than direct commercial peering or an IXP presence. No public settlement-free-peering policy or PeeringDB profile was found. No notable public abuse signal (Spamhaus, botnet, breach reporting) surfaced for AS589 as of 2026-07-11, though a direct Spamhaus checker fetch returned HTTP 403 and could not be independently confirmed.

Operator

University of North Texas (ARIN org handle UNT-Z), operationally UNT System Information Technology, 1112 Dallas Drive, Suite 4200, Denton, TX 76205 [Confirmed] — https://rdap.arin.net/registry/autnum/589, https://technology.untsystem.edu/

Country / RIR

US, ARIN [Confirmed] — https://rdap.arin.net/registry/autnum/589

Allocated

1990-02-12 (ARIN RDAP autnum top-level registration event); last changed 2026-03-04 [Confirmed] — https://rdap.arin.net/registry/autnum/589 (independently corroborated by https://bgp.tools/as/589 and https://whois.arin.net/rest/asn/AS589)

Org status

Active [Confirmed] — https://rdap.arin.net/registry/autnum/589

Contacts

abuse@unt.edu (Information Security group role mailbox, unvalidated POC since 2019); administrative/technical contacts Michelle McCauley and Timothy Burke, both of UNT System Information Technology (individual mailboxes not republished here); HQ 1112 Dallas Drive, Suite 4200, Denton, TX 76205

[Confirmed] — https://rdap.arin.net/registry/autnum/589

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-11 — not in indexed Spamhaus/NANOG/breach reporting searches for AS589; a direct Spamhaus blocklist-checker fetch returned HTTP 403 and could not be independently verified, so this is reported as absence-of-evidence rather than a confirmed clean record

Network & routing

Network type

educational/research campus network (non-transit end-user network); reaches Internet2/national R&E backbone via LEARN, the Texas regional research-and-education network [Likely] — https://www.tx-learn.org/members/index.php, https://internet2.edu/network/state-and-regional-r-e-networks/

Size

announces 3-4 IPv4 prefixes (~65,536 addresses, 129.120.0.0/16) and 1 IPv6 prefix (2620:101:1000::/42, 64 /48-equivalents); source snapshots differ slightly on exact IPv4 prefix count [Confirmed] — https://bgp.he.net/AS589, https://bgp.tools/as/589

Routing/peering

upstreams AS22645 (LEARN), AS7459 (Grande Communications Networks, LLC), AS62728 (VELOCITY, A Managed Services Company); peers sample also includes AS16905 (LEARN) [Confirmed] — https://bgp.tools/as/589, https://bgp.he.net/AS589. Public settlement-free-peering policy / PeeringDB presence: Unknown/not published

[Unknown] — https://technology.untsystem.edu/

RPKI

valid ROAs for 129.120.0.0/16 (IPv4) and 2620:101:1000::/42 (IPv6); valid ASPA across upstreams [Confirmed] — https://bgp.he.net/AS589, https://bgp.tools/as/589

Notable usage

serves UNT System campus/enterprise IT infrastructure (UNT Denton, UNT Dallas, UNT Health Science Center/Fort Worth) — WiFi, cloud, data center, and communications services for students, faculty, and staff [Likely] — https://technology.untsystem.edu/

Related ASNs

none identified beyond routing upstreams/peers (LEARN AS16905/AS22645, Grande Communications AS7459, VELOCITY AS62728) [Unknown]

Analyst note

active, announcing campus ASN with a genuine 1990-02-12 top-level RIR registration date (not conflated with the newer nested org/POC entity events, which range 2003-2026 and belong to registrant/contact records, not the autnum itself). CAIDA AS rank and customer cone size were not fetched (out of scope for the single-fetch budget) and are left Unknown rather than fabricated.