AS721 is an AS number assigned to United States Department of Defense (DoD). Country or region: United States.

OrganizationUnited States Department of Defense (DoD)
Registered nameDNIC-ASBLK-00721-00726
CountryUnited States (US)
IPv4 addresses29,689,856
IPv4 ranges5,350
IPv6 ranges59

AS numbers: United States

IPv4 address ranges (largest 20)

Range (CIDR)AddressesCheck
55.128.0.0/11 2,097,152 Check if your IP is in this range
55.112.0.0/12 1,048,576 Check if your IP is in this range
55.160.0.0/12 1,048,576 Check if your IP is in this range
55.240.0.0/12 1,048,576 Check if your IP is in this range
55.104.0.0/13 524,288 Check if your IP is in this range
55.216.0.0/13 524,288 Check if your IP is in this range
55.232.0.0/13 524,288 Check if your IP is in this range
55.180.0.0/14 262,144 Check if your IP is in this range
55.184.0.0/14 262,144 Check if your IP is in this range
55.204.0.0/14 262,144 Check if your IP is in this range
55.212.0.0/14 262,144 Check if your IP is in this range
55.228.0.0/14 262,144 Check if your IP is in this range
138.148.0.0/14 262,144 Check if your IP is in this range
143.148.0.0/14 262,144 Check if your IP is in this range
214.32.0.0/14 262,144 Check if your IP is in this range
214.88.0.0/14 262,144 Check if your IP is in this range
55.80.0.0/15 131,072 Check if your IP is in this range
55.102.0.0/15 131,072 Check if your IP is in this range
55.176.0.0/15 131,072 Check if your IP is in this range
55.192.0.0/15 131,072 Check if your IP is in this range

AS numbers of a similar size

About the data

Compiled by this site from publicly available internet registry assignment information and IP address range data. The data date is the build date of the data when the content of this page last changed. Adjacent ranges are merged and expressed as CIDR blocks, so they may differ from the routes actually announced.

This product includes GeoLite2 data created by MaxMind, available from https://www.maxmind.com.