AS20 — UR - University of Rochester

AS20 announces 3 IPv4 prefixes covering 66,048 addresses and 1 IPv6 prefixes.

About this network

An early allocation (UR) belonging to the University of Rochester in Rochester, New York.

What it's used for

• Campus, research, and administrative networking for the university.

Notable

• A low AS number reflects an allocation from the internet's earliest years, handed out roughly sequentially. An institutional network, not a commercial ISP.

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

Announced prefixes

• 128.151.0.0/16
• 192.5.53.0/24
• 199.89.214.0/24
• 2620:107:a000::/40

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS3754 NYSERNet

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS3754 NYSERNet

Routing security

• RPKI: 4 valid, 0 invalid and 0 not-found announcements; 5 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 9 route objects.
• Listed in as-sets: AS-CHTR-SYNC, AS-NYSR-DE, AS-RR-SYNC, AS14477:AS-CUSTOMERS, AS3630:AS-CONNECTORS, AS3754:AS-CONNECTORS.