Autonomous System

AS6481 Southwest Research Institute

BusinessActiveUnited StatesARIN

AS6481 (SWRI) is a business network operated by Southwest Research Institute in United States, registered with ARIN. It has 1 IPv4 prefix with 65,536 addresses and 1 IPv6 prefix, which makes it the 3,606th largest of 82,141 active autonomous systems by IPv4 space.

IPv4 addresses65,536in 1 prefix
IPv6 prefixes1≈ 1.2 × 10²⁴ addresses
Size rank#3,606of 82,141 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationSouthwest Research Institute
AS nameSWRI
Websiteswri.org
Country United States (US)
Network typeBusiness
RegistryARIN
Abuse contacttodd.hebert@swri.org
Registered1996-04-29
Last updated2025-09-30

IPv4 prefixes

1 prefix · 65,536 addresses
NetworkAddressesFirst – last address
129.162.0.0/1665,536129.162.0.0 – 129.162.255.255

IPv6 prefixes

1 prefix
  • 2620:14::/48

Query AS6481 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=AS6481&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS6481, with or without a key:

curl "https://api.ipapi.is/?q=129.162.0.1"

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