AS760

AS760 is an actively announced RIPE-region legacy ASN operated by the University of Vienna's Central IT Service (Zentraler Informatikdienst, ZID) for the university's campus network — it is not dormant. RIPEstat and CAIDA agree it currently announces 7 IPv4 prefixes (~99,584 addresses), fully visible across all 330 RIS peers, though it originates no IPv6 space at all.

The network behind the ASN, branded internally as the Uni-Datennetz, is a ~5,000 km MPLS backbone linking two central hub sites and the university's campuses over 10/40/100 Gbit/s Ethernet links, serving roughly 30,000 wired hosts and 2,000 eduroam Wi-Fi access points. It underpins ordinary campus services — Wi-Fi, VPN, DHCP/DNS, server hosting, and firewalling for university units — rather than commercial transit.

Routing-wise, AS760 is a small, single-upstream academic network: CAIDA's AS-degree data shows a customer cone of 3 ASNs / 14 prefixes and only one observed provider relationship, matching the operator's own description of a redundant uplink into ACOnet (AS1853), Austria's national research network. RDAP remarks also name AS1764 (nextlayer.at) as an upstream, a second relationship that CAIDA's single-provider degree count does not corroborate — this discrepancy is unresolved rather than reconciled. No PeeringDB net record exists for AS760, and no formal public peering-policy document was found.

The registry date for AS760 needs a caveat rather than a plain read: RIPE RDAP's top-level "registration" event carries the value 1970-01-01T00:00:00Z. That is the literal registry-reported registration event, so it is recorded as allocated_date below per the registry-first-party-fact rule, but 1970-01-01 is also RIPE NCC's well-documented Unix-epoch placeholder for legacy resources predating RIPE's precise creation-date tracking — the true real-world allocation year (plausibly the 1990s, given the low AS number) could not be independently verified this pass.

Operator

Universität Wien (University of Vienna), network operated by its Zentraler Informatikdienst (ZID, Central IT Service) [Confirmed] — RIPE RDAP (https://rdap.db.ripe.net/autnum/760), zid.univie.ac.at

Country / RIR

AT, RIPE NCC (RIPE-region legacy academic ASN, not ARIN) [Confirmed] — RIPE RDAP

Allocated

RIPE RDAP top-level registration event reads 1970-01-01, RIPE's known epoch placeholder for pre-digitization legacy resources — recorded literally, but NOT a verified real-world allocation date; last changed 2017-11-15 [Confirmed for the raw RDAP values; Unknown for the true allocation year] — https://rdap.db.ripe.net/autnum/760

Org status

active (RIPE RDAP status ACTIVE); org ORG-VUCC1-RIPE "Vienna University Computer Center", Universitätsstraße 7 (NIG), A-1010 Vienna, Austria; administrative contact Ulrich Kiermayr [Confirmed] — https://rdap.db.ripe.net/autnum/760

Contacts

abuse/security.zid@univie.ac.at (RDAP abuse role); net-admin@cc.univie.ac.at (registry notify contact, per bgp.he.net mirror) [Likely] — https://rdap.db.ripe.net/autnum/760, https://bgp.he.net/AS760

Security/abuse context (NEUTRAL, DATED)

no notable public abuse signal found as of 2026-07-28 — not in Spamhaus ASN-DROP, no NANOG archive mentions; Cisco Talos and GreyNoise returned HTTP 403 and are unchecked rather than clean

Network & routing

Network type

academic/research campus network (Uni-Datennetz), MPLS backbone across ~5,000 km of fiber, 10/40/100 Gbit/s Ethernet, ~30,000 wired hosts, ~2,000 eduroam APs; not a commercial/transit ISP [Confirmed] — https://zid.univie.ac.at/uni-datennetz

Size

7 IPv4 prefixes announced (77.80.0.0/17, 131.130.0.0/16, 192.107.232.0/24, 192.174.64.0/24, 192.174.65.0/24, 192.174.66.0/24, 192.174.67.0/24), ~99,584 IPv4 addresses; 0 IPv6 prefixes [Confirmed] — https://stat.ripe.net/AS760#tabId=routing

Routing/peering

CAIDA AS rank #5912 (AT-clique member); customer cone 3 ASNs / 14 prefixes / 101,376 addresses; AS degree total 3 (customer 2, peer 0, provider 1). Primary upstream ACOnet (AS1853); RDAP remarks additionally list AS1764 (nextlayer.at) as upstream, uncorroborated by CAIDA's single-provider count. No PeeringDB net record for AS760 (404); no published peering policy

[Likely] — https://asrank.caida.org/asns/760, https://rdap.db.ripe.net/autnum/760, https://www.peeringdb.com/asn/760

RPKI

not queried this pass — RIPEstat rpki-validation requires a --prefix parameter not supplied in this run; Unknown — https://stat.ripe.net/AS760

Notable usage

campus network for the University of Vienna, Austria's largest university — eduroam Wi-Fi, VPN (u:connect), DHCP/IP management, DNS, server hosting, and firewall services for university organizational units [Confirmed] — https://zid.univie.ac.at/wlan-netzwerk, https://zid.univie.ac.at/uni-datennetz

Related ASNs

AS1853 (ACOnet, primary upstream / Austrian academic research network) [Confirmed] — https://rdap.db.ripe.net/autnum/760

Analyst note

AS760 is live and routed, not dormant — the opposite triage posture from a typical legacy ASN check. The one open question is the allocated_date: RIPE's raw registration event is the Unix-epoch placeholder value, recorded per the registry-first-party-fact rule but not treated as a real allocation year. The upstream count (one vs. two providers) and peer list are only partially corroborated across RDAP remarks, CAIDA degree data, and third-party BGP looking-glass mirrors — flagged, not reconciled.