AS8643 — ATHENANET Academic and Research Network in the Region

Network type: education

AS8643 announces 4 IPv4 prefixes covering 51,712 addresses and 1 IPv6 prefixes.

About this network

ATHENAnet — the campus network of the National and Kapodistrian University of Athens, Greece's oldest university (founded 1837). The RIR objects place it at Panepistimioupolis, Ilisia, the university's main Athens campus.

What it's used for

• Campus networking for students, faculty, laboratories and university services. Its two large provider-independent blocks, 195.134.64.0/18 and 88.197.0.0/17, are both registered as ATHENA-NET directly to the university, and forward DNS confirms the use: university hosts such as noc.uoa.gr and departmental servers resolve into 195.134.64.0/18.
• The name is institutional, not commercial. "Region" in the registry description refers to the academic and research region the network serves, not a telecom footprint.

Notable

• Single-homed to AS5408, GRNET, the Greek national research and education network. Greek universities take their transit from GRNET rather than from commercial carriers, which is the standard NREN arrangement across Europe.
• Around 50,000 addresses with no reverse DNS published on the sampled space, a common posture for a campus that numbers most of its estate behind NAT and firewalls.

Interesting

• Provider-independent (PI) status on both blocks means the university owns the addresses outright rather than borrowing them from GRNET. That is what lets a campus change upstream without renumbering.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 87.239.232.0/21
• 88.197.0.0/17
• 195.130.64.0/23
• 195.134.64.0/18
• 2001:648:2010::/48

Upstream networks

• AS5408 National Infrastructures for Research and Technology S.A.

Adjacent networks

• AS5408 National Infrastructures for Research and Technology S.A.