Autonomous System

AS50 Oak Ridge National Laboratory

GovernmentActiveUnited StatesARIN

AS50 (ORNL-MSRNET) is a government network operated by Oak Ridge National Laboratory in United States, registered with ARIN. It has 10 IPv4 prefixes with 133,632 addresses and 1 IPv6 prefix, which makes it the 1,794th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses133,632in 10 prefixes
IPv6 prefixes1≈ 1.9 × 10²⁵ addresses
Size rank#1,794of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationOak Ridge National Laboratory
AS nameORNL-MSRNET
Websiteornl.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactnetmgr@ornl.gov
Registered1985-09-20
Last updated2025-01-07

IPv4 prefixes

10 prefixes · 133,632 addresses
NetworkAddressesFirst – last address
128.219.0.0/1665,536128.219.0.0 – 128.219.255.255
160.91.0.0/1665,536160.91.0.0 – 160.91.255.255
192.148.96.0/23512192.148.96.0 – 192.148.97.255
192.188.178.0/23512192.188.178.0 – 192.188.179.255
192.12.68.0/24256192.12.68.0 – 192.12.68.255
192.31.96.0/24256192.31.96.0 – 192.31.96.255
192.148.93.0/24256192.148.93.0 – 192.148.93.255
192.188.177.0/24256192.188.177.0 – 192.188.177.255
192.188.180.0/24256192.188.180.0 – 192.188.180.255
192.188.182.0/24256192.188.182.0 – 192.188.182.255

IPv6 prefixes

1 prefix
  • 2620:0:2b30::/44

Query AS50 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=AS50&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS50, with or without a key:

curl "https://api.ipapi.is/?q=128.219.0.1"

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