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.

Exposure

Small, single-org academic network with narrow attack surface — 7 IPv4 prefixes, no IPv6, no visible open peering, one confirmed upstream (ACOnet); low likelihood of routing-hijack blast radius beyond the university itself.

Abuse signal

Not listed in Spamhaus ASN-DROP as of 2026-07-28, and no NANOG mailing-list archive threads reference AS760 — no notable public abuse history surfaced.

Unchecked sources

Cisco Talos Reputation Center and GreyNoise's ASN page both returned HTTP 403 on direct fetch; treat as unchecked, not as a confirmed clean bill.

RPKI

Validation status not queried this pass — RIPEstat's rpki-validation endpoint requires a specific prefix parameter that was not supplied; posture is Unknown, not assessed as invalid or valid.

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.