Autonomous System
AS749 United States Department of Defense (DoD)
GovernmentActiveUnited StatesARIN
AS749 (DNIC-AS-00749) is a government network operated by United States Department of Defense (DoD) in United States, registered with ARIN. It has 3,133 IPv4 prefixes with 227,398,912 addresses, which makes it the 1st largest of 82,141 active autonomous systems by IPv4 space.
IPv4 addresses227,398,912in 3,133 prefixes
IPv6 prefixes0none
Size rank#1of 82,141 active ASNs
Details
OrganizationUnited States Department of Defense (DoD)
AS nameDNIC-AS-00749
Websitedefense.gov
Country United States (US)
Network typeGovernment
RegistryARIN
Abuse contactdisa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Registered—
Last updated2025-09-12
IPv4 prefixes
3,133 prefixes · 227,398,912 addresses| Network | Addresses | First – last address |
|---|---|---|
| 7.0.0.0/8 | 16,777,216 | 7.0.0.0 – 7.255.255.255 |
| 11.0.0.0/8 | 16,777,216 | 11.0.0.0 – 11.255.255.255 |
| 21.0.0.0/8 | 16,777,216 | 21.0.0.0 – 21.255.255.255 |
| 22.0.0.0/8 | 16,777,216 | 22.0.0.0 – 22.255.255.255 |
| 26.0.0.0/8 | 16,777,216 | 26.0.0.0 – 26.255.255.255 |
| 28.0.0.0/8 | 16,777,216 | 28.0.0.0 – 28.255.255.255 |
| 29.0.0.0/8 | 16,777,216 | 29.0.0.0 – 29.255.255.255 |
| 30.0.0.0/8 | 16,777,216 | 30.0.0.0 – 30.255.255.255 |
| 33.0.0.0/8 | 16,777,216 | 33.0.0.0 – 33.255.255.255 |
| 214.128.0.0/9 | 8,388,608 | 214.128.0.0 – 214.255.255.255 |
| 215.128.0.0/9 | 8,388,608 | 215.128.0.0 – 215.255.255.255 |
| 6.192.0.0/10 | 4,194,304 | 6.192.0.0 – 6.255.255.255 |
| 6.160.0.0/11 | 2,097,152 | 6.160.0.0 – 6.191.255.255 |
| 205.0.0.0/11 | 2,097,152 | 205.0.0.0 – 205.31.255.255 |
| 215.32.0.0/11 | 2,097,152 | 215.32.0.0 – 215.63.255.255 |
| 215.96.0.0/11 | 2,097,152 | 215.96.0.0 – 215.127.255.255 |
| 6.96.0.0/12 | 1,048,576 | 6.96.0.0 – 6.111.255.255 |
| 6.144.0.0/12 | 1,048,576 | 6.144.0.0 – 6.159.255.255 |
| 148.32.0.0/12 | 1,048,576 | 148.32.0.0 – 148.47.255.255 |
| 205.32.0.0/12 | 1,048,576 | 205.32.0.0 – 205.47.255.255 |
| 215.16.0.0/12 | 1,048,576 | 215.16.0.0 – 215.31.255.255 |
| 215.80.0.0/12 | 1,048,576 | 215.80.0.0 – 215.95.255.255 |
| 6.24.0.0/13 | 524,288 | 6.24.0.0 – 6.31.255.255 |
| 6.56.0.0/13 | 524,288 | 6.56.0.0 – 6.63.255.255 |
| 6.88.0.0/13 | 524,288 | 6.88.0.0 – 6.95.255.255 |
7.0.0.0/8 11.0.0.0/8 21.0.0.0/8 22.0.0.0/8 26.0.0.0/8 28.0.0.0/8 29.0.0.0/8 30.0.0.0/8 33.0.0.0/8 214.128.0.0/9 215.128.0.0/9 6.192.0.0/10 6.160.0.0/11 205.0.0.0/11 215.32.0.0/11 215.96.0.0/11 6.96.0.0/12 6.144.0.0/12 148.32.0.0/12 205.32.0.0/12 215.16.0.0/12 215.80.0.0/12 6.24.0.0/13 6.56.0.0/13 6.88.0.0/13
The 25 largest of 3,133. The API and the database have all of them.
IPv6 prefixes
No IPv6 prefixes.
Query AS749 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=AS749&key=YOUR_API_KEY"Any address in its prefixes resolves to AS749, with or without a key:
curl "https://api.ipapi.is/?q=7.0.0.1"Other networks of United States Department of Defense (DoD)
6 of 108AS721 United States Department of Defense (DoD)72,922,368 IPv4 addressesAS56 United States Department of Defense (DoD)8,089,600 IPv4 addressesAS306 United States Department of Defense (DoD)4,666,880 IPv4 addressesAS668 United States Department of Defense (DoD)2,558,464 IPv4 addressesAS5972 United States Department of Defense (DoD)2,300,416 IPv4 addressesAS367 United States Department of Defense (DoD)2,121,984 IPv4 addresses
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