AS721 - United States Department of Defense (DoD)

Detailed information about the Autonomous System AS721:

API Url https://api.ipapi.is/?q=AS721
Status Active
Organization United States Department of Defense (DoD)
Description DNIC-ASBLK-00721-00726, US
Website defense.gov
Type government
Abuse E-Mail disa.columbus.ns.mbx.hostmaster-dod-nic@mail.mil
Whois https://api.ipapi.is/?whois=AS721
Created -
Updated 2025-09-12
Country US

IPv4 Prefixes

Currently, there are 476 IPv4 prefixes for AS721 - United States Department of Defense (DoD) in the database. This amounts to 146,152,448 IPv4 addresses that are hosted on this ASN. The following list shows the first 25 IPv4 prefixes of the ASN. To obtain all prefixes, please purchase the full database 

6.16.172.0/23
6.16.174.0/24
6.64.181.0/24
55.0.0.0/8
130.22.0.0/16
131.4.0.0/15
131.16.0.0/16
131.32.0.0/11
131.64.0.0/13
131.73.0.0/16
131.74.0.0/15
131.76.0.0/14
131.78.3.0/24
131.78.204.0/24
131.80.0.0/14
131.86.0.0/15
131.86.0.0/16
131.87.0.0/16
132.0.0.0/10
132.80.0.0/12
132.96.0.0/11
132.128.0.0/12
134.80.0.0/16
134.135.0.0/16
134.233.0.0/16

IPv6 Prefixes

Currently, there are 4 IPv6 prefixes for AS721 - United States Department of Defense (DoD) in the database. This amounts to 316,912,650,057,057,350,000,000,000,000 IPv6 addresses that are hosted on this ASN. 

2608:120::/32
2608:121::/32
2608:120::/32
2608:121::/32

Raw WHOIS Record - AS721 - United States Department of Defense (DoD)