AS1742 — HARVARD-UNIV

AS1742 announces 9 IPv4 prefixes covering 203,520 addresses and 3 IPv6 prefixes.

About this network

The campus network of Harvard University (HARVARD-UNIV) in Cambridge, Massachusetts.

What it's used for

• Campus, research, and administrative networking for Harvard University.

Notable

• A major research university's institutional network, not commercial hosting. The low AS number reflects how early Harvard connected to the internet.

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

Announced prefixes

• 65.112.0.0/20
• 67.134.204.0/22
• 128.103.0.0/16
• 131.142.0.0/16
• 140.247.0.0/16
• 192.5.66.0/24
• 192.54.223.0/24
• 192.131.102.0/24
• 199.94.60.0/22
• 2602:fca9::/36
• 2607:fb60::/32
• 2620:32:8000::/48

Upstream networks

• AS3356 Level 3 Parent, LLC
• AS174 Cogent Communications, LLC
• AS11164 Internet2
• AS11537 Internet2

Downstream networks

• AS13315 Harvard Business School
• AS40127 Longwood Medical and Academic Area (LMA)

Adjacent networks

• AS3356 Level 3 Parent, LLC
• AS40127 Longwood Medical and Academic Area (LMA)
• AS174 Cogent Communications, LLC
• AS13315 Harvard Business School
• AS11164 Internet2
• AS11537 Internet2

Routing security

• RPKI: 16 valid, 0 invalid and 2 not-found announcements; 17 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 39 route objects.
• Listed in as-sets: AS-CTBC-CUSTOMERS218, AS-HARV, AS10578:AS-HARVARD, AS11164:AS-PARTICIPANTS, AS11537:AS-PARTICIPANTS, AS174:AS-COGC-007, AS198949:AS-SD.