Autonomous System

AS19 Leidos, Inc.

BusinessActiveUnited StatesARIN

AS19 (LEIDOS-AS) is a business network operated by Leidos, Inc. in United States, registered with ARIN. It has 26 IPv4 prefixes with 259,584 addresses and 3 IPv6 prefixes, which makes it the 1,079th largest of 82,200 active autonomous systems by IPv4 space.

IPv4 addresses259,584in 26 prefixes
IPv6 prefixes3≈ 5.6 × 10²⁷ addresses
Size rank#1,079of 82,200 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationLeidos, Inc.
AS nameLEIDOS-AS
Websiteleidos.com
Country United States (US)
Network typeBusiness
RegistryARIN
Abuse contactL_Network-Operations@Leidos.com
Registered1984-07-27
Last updated2026-03-05

IPv4 prefixes

26 prefixes · 259,584 addresses
NetworkAddressesFirst – last address
140.162.0.0/1665,536140.162.0.0 – 140.162.255.255
149.8.0.0/1665,536149.8.0.0 – 149.8.255.255
149.8.0.0/1732,768149.8.0.0 – 149.8.127.255
149.8.128.0/1732,768149.8.128.0 – 149.8.255.255
140.162.64.0/1816,384140.162.64.0 – 140.162.127.255
140.162.128.0/1816,384140.162.128.0 – 140.162.191.255
140.162.192.0/1816,384140.162.192.0 – 140.162.255.255
140.162.24.0/212,048140.162.24.0 – 140.162.31.255
140.162.40.0/212,048140.162.40.0 – 140.162.47.255
204.115.176.0/212,048204.115.176.0 – 204.115.183.255
140.162.48.0/221,024140.162.48.0 – 140.162.51.255
205.153.240.0/221,024205.153.240.0 – 205.153.243.255
140.162.8.0/23512140.162.8.0 – 140.162.9.255
140.162.10.0/23512140.162.10.0 – 140.162.11.255
140.162.12.0/23512140.162.12.0 – 140.162.13.255
140.162.16.0/23512140.162.16.0 – 140.162.17.255
140.162.32.0/23512140.162.32.0 – 140.162.33.255
140.162.190.0/23512140.162.190.0 – 140.162.191.255
140.162.254.0/23512140.162.254.0 – 140.162.255.255
149.8.46.0/23512149.8.46.0 – 149.8.47.255
140.162.191.0/24256140.162.191.0 – 140.162.191.255
140.162.255.0/24256140.162.255.0 – 140.162.255.255
192.5.8.0/24256192.5.8.0 – 192.5.8.255
192.33.134.0/24256192.33.134.0 – 192.33.134.255
192.131.125.0/24256192.131.125.0 – 192.131.125.255
The 25 largest of 26. The API and the database have all of them.

IPv6 prefixes

3 prefixes
  • 2620:11c:8000::/36
  • 2620:11c:8000::/40
  • 2620:11c:8800::/40

Query AS19 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=AS19&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS19, with or without a key:

curl "https://api.ipapi.is/?q=140.162.0.1"

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