Autonomous System details
AS721
United States Department of Defense (dod) — mail.mil
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Summary
| Country |
 United States
|
| Organization | United States Department of Defense (dod) |
| Domain | mail.mil |
| Number of IPv4 | 67,689,984 |
| Number of IPv6 | 1.5846× 1029 |
| AS Type | Government |
| Registry | ARIN |
| Allocated | January 01, 1970 (about 56 years ago) |
| Updated | September 12, 2025 (about 1 months ago) |
IP Ranges
AS721 announces 205 IPv4 ranges and 2 IPv6 ranges.
That's a total of 67,689,984 IPv4 addresses and 1.5846× 1029 IPv6 addresses.
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 6.16.172.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 6.16.174.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 6.64.181.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 55.0.0.0/8 |
Headquarters, Usaisc
|
16,777,216 | ARIN | REALLOCATION |
| 130.22.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 131.4.0.0/15 |
Air Force Systems Networking
|
131,072 | ARIN | REALLOCATION |
| 131.16.0.0/16 |
Air Force Systems Networking
|
65,536 | ARIN | REALLOCATION |
| 131.32.0.0/11 |
Air Force Systems Networking
|
2,097,152 | ARIN | REALLOCATION |
| 131.64.0.0/13 |
Dod Network Information Center
|
524,288 | ARIN | REALLOCATION |
| 131.73.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 131.74.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 131.76.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 131.78.3.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 131.78.204.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 131.80.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 131.86.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 131.87.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 132.0.0.0/10 |
Air Force Systems Networking
|
4,194,304 | ARIN | REALLOCATION |
| 132.128.0.0/12 |
Headquarters, Usaisc
|
1,048,576 | ARIN | REALLOCATION |
| 134.80.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 134.135.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 134.233.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 134.235.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 136.212.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 136.216.0.0/14 |
Headquarters, Usaisc
|
262,144 | ARIN | REALLOCATION |
| 136.220.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 137.0.0.0/13 |
Air Force Systems Networking
|
524,288 | ARIN | REALLOCATION |
| 137.8.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 137.209.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 138.50.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 138.136.0.0/13 |
Dod Network Information Center
|
524,288 | ARIN | REALLOCATION |
| 138.144.0.0/12 |
Dod Network Information Center
|
1,048,576 | ARIN | REALLOCATION |
| 138.160.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 138.162.5.0/24 |
Navy Network Information Center (nnic)
|
256 | ARIN | REALLOCATION |
| 138.164.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 138.168.0.0/14 |
MARINE CORPS CYBERSPACE OPERATIONS GROUP
|
262,144 | ARIN | REALLOCATION |
| 138.178.0.0/16 |
Navy Network Information Center (nnic)
|
65,536 | ARIN | REALLOCATION |
| 138.178.0.0/15 |
Navy Network Information Center (nnic)
|
131,072 | ARIN | REALLOCATION |
| 138.180.0.0/16 |
Navy Network Information Center (nnic)
|
65,536 | ARIN | REALLOCATION |
| 139.139.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 139.241.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 140.13.73.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 140.21.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 140.35.64.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 140.152.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 140.153.72.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 140.201.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.69.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.73.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.74.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.76.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.81.0.0/17 |
Headquarters, Usaisc
|
32,768 | ARIN | REALLOCATION |
| 143.81.103.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 143.81.128.0/17 |
Headquarters, Usaisc
|
32,768 | ARIN | REALLOCATION |
| 143.83.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.84.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 143.85.0.0/18 |
Headquarters, Usaisc
|
16,384 | ARIN | REALLOCATION |
| 143.85.64.0/18 |
Headquarters, Usaisc
|
16,384 | ARIN | REALLOCATION |
| 143.85.128.0/18 |
Headquarters, Usaisc
|
16,384 | ARIN | REALLOCATION |
| 143.85.192.0/18 |
Headquarters, Usaisc
|
16,384 | ARIN | REALLOCATION |
| 143.86.176.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 143.86.204.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 143.138.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 143.140.0.0/14 |
Air Force Systems Networking
|
262,144 | ARIN | REALLOCATION |
| 143.144.0.0/13 |
Air Force Systems Networking
|
524,288 | ARIN | REALLOCATION |
| 143.156.0.0/15 |
Air Force Systems Networking
|
131,072 | ARIN | REALLOCATION |
| 144.100.0.0/14 |
Headquarters, Usaisc
|
262,144 | ARIN | REALLOCATION |
| 144.104.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 144.104.0.0/14 |
Headquarters, Usaisc
|
262,144 | ARIN | REALLOCATION |
| 144.109.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 144.170.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 144.182.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 144.251.43.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 146.55.22.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 146.55.124.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 146.55.127.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 147.130.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 147.216.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 153.23.0.0/16 |
Air Force Systems Networking
|
65,536 | ARIN | REALLOCATION |
| 153.24.0.0/15 |
Air Force Systems Networking
|
131,072 | ARIN | REALLOCATION |
| 153.24.0.0/14 |
Air Force Systems Networking
|
262,144 | ARIN | REALLOCATION |
| 153.26.0.0/16 |
Air Force Systems Networking
|
65,536 | ARIN | REALLOCATION |
| 153.29.0.0/17 |
Air Force Systems Networking
|
32,768 | ARIN | REALLOCATION |
| 153.29.128.0/17 |
Air Force Systems Networking
|
32,768 | ARIN | REALLOCATION |
| 155.7.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 155.21.192.0/19 |
Headquarters, Usaisc
|
8,192 | ARIN | REALLOCATION |
| 155.29.48.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 155.29.166.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 155.152.0.0/14 |
Headquarters, Usaisc
|
262,144 | ARIN | REALLOCATION |
| 155.155.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 155.252.0.0/16 |
Navy Network Information Center (nnic)
|
65,536 | ARIN | REALLOCATION |
| 156.112.148.0/23 |
Dod Network Information Center
|
512 | ARIN | REASSIGNMENT |
| 158.0.0.0/13 |
Dod Network Information Center
|
524,288 | ARIN | REALLOCATION |
| 158.8.0.0/14 |
Dod Network Information Center
|
262,144 | ARIN | REALLOCATION |
| 158.14.0.0/15 |
Headquarters, Usaisc
|
131,072 | ARIN | REALLOCATION |
| 158.240.0.0/14 |
MARINE CORPS CYBERSPACE OPERATIONS GROUP
|
262,144 | ARIN | REALLOCATION |
| 159.77.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 160.136.0.0/13 |
Headquarters, Usaisc
|
524,288 | ARIN | REALLOCATION |
| 160.144.0.0/13 |
Headquarters, Usaisc
|
524,288 | ARIN | REALLOCATION |
| 164.87.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 164.230.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 164.236.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 192.41.202.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 192.42.41.0/24 |
Navy Network Information Center (nnic)
|
256 | ARIN | REALLOCATION |
| 192.73.26.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 192.73.28.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 192.86.112.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 192.86.252.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 192.101.132.0/23 |
Dod Network Information Center
|
512 | ARIN | REALLOCATION |
| 192.108.8.0/21 |
Navy Network Information Center (nnic)
|
2,048 | ARIN | REALLOCATION |
| 192.108.176.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 192.111.116.0/23 |
Navy Network Information Center (nnic)
|
512 | ARIN | REALLOCATION |
| 192.129.64.0/22 |
Headquarters, Usaisc
|
1,024 | ARIN | REALLOCATION |
| 192.132.83.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 192.138.24.0/21 |
Dod Network Information Center
|
2,048 | ARIN | REALLOCATION |
| 192.138.32.0/19 |
Dod Network Information Center
|
8,192 | ARIN | REALLOCATION |
| 192.138.64.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 192.138.80.0/22 |
Dod Network Information Center
|
1,024 | ARIN | REALLOCATION |
| 192.153.132.0/22 |
Headquarters, Usaisc
|
1,024 | ARIN | REALLOCATION |
| 192.153.136.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 192.153.144.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 192.153.244.0/23 |
Dod Network Information Center
|
512 | ARIN | REALLOCATION |
| 192.156.0.0/18 |
MARINE CORPS CYBERSPACE OPERATIONS GROUP
|
16,384 | ARIN | REALLOCATION |
| 192.156.64.0/20 |
MARINE CORPS CYBERSPACE OPERATIONS GROUP
|
4,096 | ARIN | REASSIGNMENT |
| 192.156.80.0/23 |
MARINE CORPS CYBERSPACE OPERATIONS GROUP
|
512 | ARIN | REASSIGNMENT |
| 192.172.0.0/19 |
Headquarters, Usaisc
|
8,192 | ARIN | REALLOCATION |
| 192.187.4.0/22 |
Navy Network Information Center (nnic)
|
1,024 | ARIN | REALLOCATION |
| 192.188.208.0/20 |
Headquarters, Usaisc
|
4,096 | ARIN | REALLOCATION |
| 192.240.128.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 192.240.129.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 192.240.144.0/22 |
Dod Network Information Center
|
1,024 | ARIN | REALLOCATION |
| 198.25.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 198.25.0.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 198.26.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 198.49.184.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 198.97.72.0/21 |
Navy Network Information Center (nnic)
|
2,048 | ARIN | REALLOCATION |
| 198.97.96.0/19 |
Dod Network Information Center
|
8,192 | ARIN | REALLOCATION |
| 198.97.128.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 198.97.192.0/20 |
Headquarters, Usaisc
|
4,096 | ARIN | REALLOCATION |
| 198.97.192.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 198.97.240.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 198.218.0.0/15 |
Air Force Systems Networking
|
131,072 | ARIN | REALLOCATION |
| 198.220.0.0/16 |
Air Force Systems Networking
|
65,536 | ARIN | REALLOCATION |
| 198.250.128.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 198.250.192.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 198.250.192.0/19 |
Dod Network Information Center
|
8,192 | ARIN | REALLOCATION |
| 198.250.240.0/21 |
Dod Network Information Center
|
2,048 | ARIN | REALLOCATION |
| 199.9.64.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REASSIGNMENT |
| 199.32.128.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 199.57.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 199.112.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 199.114.32.0/20 |
Headquarters, Usaisc
|
4,096 | ARIN | REALLOCATION |
| 199.122.4.0/23 |
Dod Network Information Center
|
512 | ARIN | REALLOCATION |
| 199.122.32.0/20 |
Headquarters, Usaisc
|
4,096 | ARIN | REALLOCATION |
| 199.122.56.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REASSIGNMENT |
| 199.123.72.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 199.123.80.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 199.123.91.0/24 |
Headquarters, Usaisc
|
256 | ARIN | REALLOCATION |
| 199.123.104.0/21 |
Dod Network Information Center
|
2,048 | ARIN | REALLOCATION |
| 199.123.122.0/23 |
Headquarters, Usaisc
|
512 | ARIN | REALLOCATION |
| 199.124.16.0/21 |
Headquarters, Usaisc
|
2,048 | ARIN | REALLOCATION |
| 199.208.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 199.209.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 199.211.64.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 199.211.128.0/17 |
Dod Network Information Center
|
32,768 | ARIN | REALLOCATION |
| 199.211.176.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 199.211.192.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 199.225.0.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 199.251.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 199.252.32.0/20 |
Dod Network Information Center
|
4,096 | ARIN | REALLOCATION |
| 199.252.128.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 199.252.143.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 199.252.154.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 199.252.155.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 199.252.157.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 199.252.162.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 199.252.180.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 204.34.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 204.34.186.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 204.37.8.0/21 |
Dod Network Information Center
|
2,048 | ARIN | REALLOCATION |
| 204.37.128.0/17 |
Dod Network Information Center
|
32,768 | ARIN | REALLOCATION |
| 204.208.0.0/16 |
Headquarters, Usaisc
|
65,536 | ARIN | REALLOCATION |
| 204.222.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 205.56.0.0/13 |
Navy Network Information Center (nnic)
|
524,288 | ARIN | REALLOCATION |
| 205.56.162.0/24 |
Navy Network Information Center (nnic)
|
256 | ARIN | REALLOCATION |
| 205.64.0.0/11 |
Navy Network Information Center (nnic)
|
2,097,152 | ARIN | REALLOCATION |
| 205.69.238.0/24 |
Navy Network Information Center (nnic)
|
256 | ARIN | REALLOCATION |
| 205.96.0.0/13 |
Navy Network Information Center (nnic)
|
524,288 | ARIN | REALLOCATION |
| 205.104.0.0/15 |
Navy Network Information Center (nnic)
|
131,072 | ARIN | REALLOCATION |
| 205.106.0.0/15 |
Navy Network Information Center (nnic)
|
131,072 | ARIN | REALLOCATION |
| 205.108.0.0/15 |
Navy Network Information Center (nnic)
|
131,072 | ARIN | REALLOCATION |
| 205.110.0.0/16 |
Navy Network Information Center (nnic)
|
65,536 | ARIN | REALLOCATION |
| 205.115.0.0/16 |
Navy Network Information Center (nnic)
|
65,536 | ARIN | REALLOCATION |
| 206.37.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 206.37.202.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| 206.38.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 206.39.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 207.132.0.0/15 |
Dod Network Information Center
|
131,072 | ARIN | REALLOCATION |
| 209.22.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 214.0.0.0/8 |
Dod Network Information Center
|
16,777,216 | ARIN | REALLOCATION |
| 214.13.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 214.40.0.0/16 |
Dod Network Information Center
|
65,536 | ARIN | REALLOCATION |
| 215.0.0.0/9 |
Dod Network Information Center
|
8,388,608 | ARIN | REALLOCATION |
| 215.65.0.0/18 |
Dod Network Information Center
|
16,384 | ARIN | REALLOCATION |
| 215.67.59.0/24 |
Dod Network Information Center
|
256 | ARIN | REALLOCATION |
| Prefix | Organization | Size | Registry | Status |
|---|---|---|---|---|
| 2608:120::/32 |
United States Department of Defense (dod)
|
7.9228× 1028 | ARIN | ALLOCATION |
| 2608:121::/32 |
United States Department of Defense (dod)
|
7.9228× 1028 | ARIN | ALLOCATION |
Peers
AS721 does not have any direct peering agreements. Instead, its global connectivity is achieved through transit providers. While this setup ensures comprehensive reach, future peering could reduce latency and optimize route efficiency.
Upstreams
AS721 connects to the global Internet via at least 1 upstream provider. In this setup, AS721 acts as a customer, subscribing to these transit services to obtain full BGP routing information and ensure reliable, redundant access to external networks.