Autonomous System

AS1540 Headquarters, USAISC

GovernmentActiveUnited StatesARIN

AS1540 (DNIC-ASBLK-01534-01546) is a government network operated by Headquarters, USAISC in United States, registered with ARIN. It has 1,217 IPv4 prefixes with 7,270,400 addresses and 49 IPv6 prefixes, which makes it the 94th largest of 82,141 active autonomous systems by IPv4 space.

IPv4 addresses7,270,400in 1,217 prefixes
IPv6 prefixes49≈ 5.9 × 10²⁵ addresses
Size rank#94of 82,141 active ASNs
Abuser scoreVery Lowunder 0.01% of its addresses flagged · method

Details

OrganizationHeadquarters, USAISC
AS nameDNIC-ASBLK-01534-01546
Websitewww.army.mil
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactdisa.columbus.ns.mbx.arin-registrations@mail.mil
Registered2004-05-12
Last updated2011-08-24

IPv4 prefixes

1,217 prefixes · 7,270,400 addresses
NetworkAddressesFirst – last address
6.240.0.0/121,048,5766.240.0.0 – 6.255.255.255
6.248.0.0/13524,2886.248.0.0 – 6.255.255.255
6.244.0.0/14262,1446.244.0.0 – 6.247.255.255
6.140.0.0/15131,0726.140.0.0 – 6.141.255.255
146.14.0.0/15131,072146.14.0.0 – 146.15.255.255
6.41.0.0/1665,5366.41.0.0 – 6.41.255.255
6.68.0.0/1665,5366.68.0.0 – 6.68.255.255
55.196.0.0/1665,53655.196.0.0 – 55.196.255.255
128.190.0.0/1665,536128.190.0.0 – 128.190.255.255
129.29.0.0/1665,536129.29.0.0 – 129.29.255.255
129.139.0.0/1665,536129.139.0.0 – 129.139.255.255
130.114.0.0/1665,536130.114.0.0 – 130.114.255.255
132.159.0.0/1665,536132.159.0.0 – 132.159.255.255
134.78.0.0/1665,536134.78.0.0 – 134.78.255.255
136.205.0.0/1665,536136.205.0.0 – 136.205.255.255
138.27.0.0/1665,536138.27.0.0 – 138.27.255.255
139.161.0.0/1665,536139.161.0.0 – 139.161.255.255
139.231.0.0/1665,536139.231.0.0 – 139.231.255.255
139.232.0.0/1665,536139.232.0.0 – 139.232.255.255
140.139.0.0/1665,536140.139.0.0 – 140.139.255.255
140.183.0.0/1665,536140.183.0.0 – 140.183.255.255
140.196.0.0/1665,536140.196.0.0 – 140.196.255.255
140.202.0.0/1665,536140.202.0.0 – 140.202.255.255
141.107.0.0/1665,536141.107.0.0 – 141.107.255.255
143.71.0.0/1665,536143.71.0.0 – 143.71.255.255
The 25 largest of 1,217. The API and the database have all of them.

IPv6 prefixes

49 prefixes
  • 2608:100:3130::/48
  • 2608:101:190::/48
  • 2608:103:4f0::/48
  • 2608:103:2740::/48
  • 2608:104:500::/48
  • 2608:104:2a20::/48
  • 2608:109:15b0::/48
  • 2608:122:3ff0::/48
  • 2608:123:4220::/48
  • 2608:124:b70::/48
  • 2608:124:4d10::/48
  • 2608:125:e80::/48
  • 2608:125:4ee0::/48
  • 2608:127:17f0::/48
  • 2608:127:5ba0::/48
  • 2608:128:5bc0::/48
  • 2608:129:2a10::/48
  • 2608:129:5bd0::/48
  • 2608:12a:7464::/48
  • 2608:140:2080::/48
  • 2608:140:4190::/48
  • 2608:141:48a0::/48
  • 2608:142:d90::/48
  • 2608:142:24a0::/48
  • 2608:143:29b0::/48
The 25 largest of 49. The API and the database have all of them.

Query AS1540 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=AS1540&key=YOUR_API_KEY"

Any address in its prefixes resolves to AS1540, with or without a key:

curl "https://api.ipapi.is/?q=6.240.0.1"

Other networks of Headquarters, USAISC

6 of 13
AS4010 Headquarters, USAISC1,176,832 IPv4 addressesAS1602 Headquarters, USAISC235,520 IPv4 addressesAS1637 Headquarters, USAISC230,400 IPv4 addressesAS1649 Headquarters, USAISC149,760 IPv4 addressesAS747 Headquarters, USAISC145,920 IPv4 addressesAS1530 Headquarters, USAISC138,496 IPv4 addresses

Largest networks in United States

AS749 United States Department of Defense (DoD)227,398,912 IPv4 addressesAS16509 Amazon.com, Inc.217,931,264 IPv4 addressesAS7018 AT&T Enterprises, LLC117,261,568 IPv4 addressesAS8075 Microsoft Corporation81,468,160 IPv4 addressesAS721 United States Department of Defense (DoD)72,922,368 IPv4 addressesAS7922 Comcast Cable Communications, LLC68,336,896 IPv4 addresses