Autonomous System

AS49 National Institute of Standards and Technology

GovernmentActiveUnited StatesARIN

AS49 (US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY) is a government network operated by National Institute of Standards and Technology in United States, registered with ARIN. It has 23 IPv4 prefixes with 65,536 addresses and 7 IPv6 prefixes, which makes it the 3,513th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses65,536in 23 prefixes
IPv6 prefixes7≈ 2.5 × 10²⁷ addresses
Size rank#3,513of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationNational Institute of Standards and Technology
AS nameUS-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY
Websitenist.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactnetops@nist.gov
Registered1985-09-04
Last updated2024-09-11

IPv4 prefixes

23 prefixes · 65,536 addresses
NetworkAddressesFirst – last address
129.6.128.0/1732,768129.6.128.0 – 129.6.255.255
129.6.64.0/1816,384129.6.64.0 – 129.6.127.255
129.6.0.0/212,048129.6.0.0 – 129.6.7.255
129.6.16.0/212,048129.6.16.0 – 129.6.23.255
129.6.40.0/212,048129.6.40.0 – 129.6.47.255
129.6.56.0/212,048129.6.56.0 – 129.6.63.255
129.6.8.0/221,024129.6.8.0 – 129.6.11.255
129.6.24.0/221,024129.6.24.0 – 129.6.27.255
129.6.32.0/221,024129.6.32.0 – 129.6.35.255
129.6.52.0/221,024129.6.52.0 – 129.6.55.255
129.6.12.0/23512129.6.12.0 – 129.6.13.255
129.6.38.0/23512129.6.38.0 – 129.6.39.255
129.6.48.0/23512129.6.48.0 – 129.6.49.255
129.6.14.0/24256129.6.14.0 – 129.6.14.255
129.6.15.0/24256129.6.15.0 – 129.6.15.255
129.6.28.0/24256129.6.28.0 – 129.6.28.255
129.6.29.0/24256129.6.29.0 – 129.6.29.255
129.6.30.0/24256129.6.30.0 – 129.6.30.255
129.6.31.0/24256129.6.31.0 – 129.6.31.255
129.6.36.0/24256129.6.36.0 – 129.6.36.255
129.6.50.0/24256129.6.50.0 – 129.6.50.255
132.163.96.0/24256132.163.96.0 – 132.163.96.255
132.163.97.0/24256132.163.97.0 – 132.163.97.255

IPv6 prefixes

7 prefixes
  • 2610:20:6000::/37
  • 2610:20:6f15::/48
  • 2610:20:6f96::/48
  • 2610:20:6f97::/48
  • 2610:20:6fcd::/48
  • 2610:20:6fce::/48
  • 2610:20:6fcf::/48

Query AS49 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=AS49&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS49, with or without a key:

curl "https://api.ipapi.is/?q=129.6.128.1"

Largest networks in United States

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