Autonomous System

AS10578 Harvard University

EducationActiveUnited StatesARIN

AS10578 (GIGAPOP-NE) is an education network operated by Harvard University in United States, registered with ARIN. It has 4 IPv4 prefixes with 24,832 addresses and 4 IPv6 prefixes, which makes it the 6,061st largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses24,832in 4 prefixes
IPv6 prefixes4≈ 1.0 × 10²⁸ addresses
Size rank#6,061of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationHarvard University
AS nameGIGAPOP-NE
Websiteharvard.edu
Country United States (US)
Network typeEducation
RegistryARIN
Abuse contactabuse@harvard.edu
Registered1997-09-19
Last updated2025-12-02

IPv4 prefixes

4 prefixes · 24,832 addresses
NetworkAddressesFirst – last address
18.2.0.0/198,19218.2.0.0 – 18.2.31.255
18.2.128.0/198,19218.2.128.0 – 18.2.159.255
18.2.192.0/198,19218.2.192.0 – 18.2.223.255
192.5.89.0/24256192.5.89.0 – 192.5.89.255

IPv6 prefixes

4 prefixes
  • 2603:40ff:4000::/36
  • 2603:40ff:6000::/36
  • 2001:468:600::/40
  • 2001:504:2e::/48

Query AS10578 with the API

The ASN lookup returns everything on this page as JSON, including every prefix. ASN lookups need an API key: a free account comes with 1,000 requests a day. 

curl "https://api.ipapi.is/?q=AS10578&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS10578, with or without a key:

curl "https://api.ipapi.is/?q=18.2.0.1"

Other networks of Harvard University

AS1742 Harvard University204,544 IPv4 addresses

Largest networks in United States

AS749 United States Department of Defense (DoD)227,464,192 IPv4 addressesAS16509 Amazon.com, Inc.218,038,784 IPv4 addressesAS7018 AT&T Enterprises, LLC117,262,080 IPv4 addressesAS8075 Microsoft Corporation81,463,040 IPv4 addressesAS721 United States Department of Defense (DoD)73,070,080 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,336,896 IPv4 addresses