Autonomous System details

AS721

United States Department of Defense (DoD)  ·  mail.mil

United States

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AS721 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 368
IPv4 addresses 72,101,120
IPv6 addresses 158,456,325,028,528,675,187,087,900,672
ASN type Government
Registry arin
Allocated 56 years ago on Jan 01, 1970
Updated 3 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
55.0.0.0/8 Headquarters, USAISC 16,777,216
214.0.0.0/8 DoD Network Information Center 16,777,216
215.0.0.0/9 DoD Network Information Center 8,388,608
132.0.0.0/10 Air Force Systems Networking 4,194,304
131.32.0.0/11 Air Force Systems Networking 2,097,152
132.96.0.0/11 Headquarters, USAISC 2,097,152
205.64.0.0/11 Navy Network Information Center (NNIC) 2,097,152
132.80.0.0/12 Headquarters, USAISC 1,048,576
132.128.0.0/12 Headquarters, USAISC 1,048,576
138.144.0.0/12 DoD Network Information Center 1,048,576
131.64.0.0/13 DoD Network Information Center 524,288
137.0.0.0/13 Air Force Systems Networking 524,288
138.136.0.0/13 DoD Network Information Center 524,288
143.144.0.0/13 Air Force Systems Networking 524,288
158.0.0.0/13 DoD Network Information Center 524,288
160.136.0.0/13 Headquarters, USAISC 524,288
160.144.0.0/13 Headquarters, USAISC 524,288
205.56.0.0/13 Navy Network Information Center (NNIC) 524,288
205.96.0.0/13 Navy Network Information Center (NNIC) 524,288
131.76.0.0/14 DoD Network Information Center 262,144
131.80.0.0/14 DoD Network Information Center 262,144
136.212.0.0/14 DoD Network Information Center 262,144
136.216.0.0/14 Headquarters, USAISC 262,144
137.8.0.0/14 DoD Network Information Center 262,144
137.240.0.0/14 Air Force Systems Networking 262,144
138.164.0.0/14 DoD Network Information Center 262,144
138.168.0.0/14 MARINE CORPS CYBERSPACE OPERATIONS GROUP 262,144
140.152.0.0/14 DoD Network Information Center 262,144
143.140.0.0/14 Air Force Systems Networking 262,144
144.100.0.0/14 Headquarters, USAISC 262,144
144.104.0.0/14 Headquarters, USAISC 262,144
153.24.0.0/14 Air Force Systems Networking 262,144
155.152.0.0/14 Headquarters, USAISC 262,144
155.216.0.0/14 Headquarters, USAISC 262,144
158.8.0.0/14 DoD Network Information Center 262,144
158.236.0.0/14 MARINE CORPS CYBERSPACE OPERATIONS GROUP 262,144
158.240.0.0/14 MARINE CORPS CYBERSPACE OPERATIONS GROUP 262,144
131.4.0.0/15 Air Force Systems Networking 131,072
131.74.0.0/15 DoD Network Information Center 131,072
131.86.0.0/15 DoD Network Information Center 131,072
136.220.0.0/15 Headquarters, USAISC 131,072
138.160.0.0/15 DoD Network Information Center 131,072
138.178.0.0/15 Navy Network Information Center (NNIC) 131,072
141.234.0.0/15 DoD Network Information Center 131,072
143.138.0.0/15 Headquarters, USAISC 131,072
143.156.0.0/15 Air Force Systems Networking 131,072
143.212.0.0/15 Headquarters, USAISC 131,072
144.104.0.0/15 Headquarters, USAISC 131,072
144.182.0.0/15 DoD Network Information Center 131,072
147.130.0.0/15 Headquarters, USAISC 131,072
147.216.0.0/15 Headquarters, USAISC 131,072
150.192.0.0/15 Headquarters, USAISC 131,072
153.24.0.0/15 Air Force Systems Networking 131,072
155.8.0.0/15 Headquarters, USAISC 131,072
155.150.0.0/15 Headquarters, USAISC 131,072
155.214.0.0/15 Headquarters, USAISC 131,072
158.14.0.0/15 Headquarters, USAISC 131,072
160.126.0.0/15 DoD Network Information Center 131,072
160.132.0.0/15 Headquarters, USAISC 131,072
164.230.0.0/15 DoD Network Information Center 131,072
198.218.0.0/15 Air Force Systems Networking 131,072
199.112.0.0/15 DoD Network Information Center 131,072
204.222.0.0/15 DoD Network Information Center 131,072
205.104.0.0/15 Navy Network Information Center (NNIC) 131,072
205.106.0.0/15 Navy Network Information Center (NNIC) 131,072
205.108.0.0/15 Navy Network Information Center (NNIC) 131,072
207.132.0.0/15 DoD Network Information Center 131,072
130.22.0.0/16 DoD Network Information Center 65,536
131.16.0.0/16 Air Force Systems Networking 65,536
131.73.0.0/16 DoD Network Information Center 65,536
131.86.0.0/16 DoD Network Information Center 65,536
131.87.0.0/16 DoD Network Information Center 65,536
134.80.0.0/16 Headquarters, USAISC 65,536
134.135.0.0/16 DoD Network Information Center 65,536
134.233.0.0/16 Headquarters, USAISC 65,536
134.235.0.0/16 Headquarters, USAISC 65,536
137.209.0.0/16 DoD Network Information Center 65,536
138.50.0.0/16 Headquarters, USAISC 65,536
138.178.0.0/16 Navy Network Information Center (NNIC) 65,536
138.180.0.0/16 Navy Network Information Center (NNIC) 65,536
139.139.0.0/16 Headquarters, USAISC 65,536
139.241.0.0/16 DoD Network Information Center 65,536
140.1.0.0/16 DoD Network Information Center 65,536
140.21.0.0/16 DoD Network Information Center 65,536
140.201.0.0/16 Headquarters, USAISC 65,536
143.69.0.0/16 Headquarters, USAISC 65,536
143.73.0.0/16 Headquarters, USAISC 65,536
143.74.0.0/16 Headquarters, USAISC 65,536
143.76.0.0/16 Headquarters, USAISC 65,536
143.81.0.0/16 Headquarters, USAISC 65,536
143.83.0.0/16 Headquarters, USAISC 65,536
143.84.0.0/16 Headquarters, USAISC 65,536
143.85.0.0/16 Headquarters, USAISC 65,536
144.109.0.0/16 Headquarters, USAISC 65,536
144.170.0.0/16 Headquarters, USAISC 65,536
153.23.0.0/16 Air Force Systems Networking 65,536
153.26.0.0/16 Air Force Systems Networking 65,536
153.29.0.0/16 Air Force Systems Networking 65,536
155.7.0.0/16 DoD Network Information Center 65,536
155.155.0.0/16 Headquarters, USAISC 65,536
155.252.0.0/16 Navy Network Information Center (NNIC) 65,536
159.77.0.0/16 DoD Network Information Center 65,536
164.87.0.0/16 DoD Network Information Center 65,536
164.236.0.0/16 DoD Network Information Center 65,536
198.25.0.0/16 DoD Network Information Center 65,536
198.26.0.0/16 DoD Network Information Center 65,536
198.220.0.0/16 Air Force Systems Networking 65,536
199.57.0.0/16 DoD Network Information Center 65,536
199.208.0.0/16 DoD Network Information Center 65,536
199.209.0.0/16 DoD Network Information Center 65,536
199.251.0.0/16 DoD Network Information Center 65,536
204.34.0.0/16 DoD Network Information Center 65,536
204.208.0.0/16 Headquarters, USAISC 65,536
205.110.0.0/16 Navy Network Information Center (NNIC) 65,536
205.115.0.0/16 Navy Network Information Center (NNIC) 65,536
206.37.0.0/16 DoD Network Information Center 65,536
206.38.0.0/16 DoD Network Information Center 65,536
206.39.0.0/16 DoD Network Information Center 65,536
209.22.0.0/16 DoD Network Information Center 65,536
214.13.0.0/16 DoD Network Information Center 65,536
214.40.0.0/16 DoD Network Information Center 65,536
143.81.0.0/17 Headquarters, USAISC 32,768
143.81.128.0/17 Headquarters, USAISC 32,768
153.29.0.0/17 Air Force Systems Networking 32,768
153.29.128.0/17 Air Force Systems Networking 32,768
199.211.128.0/17 DoD Network Information Center 32,768
204.37.128.0/17 DoD Network Information Center 32,768
140.35.64.0/18 DoD Network Information Center 16,384
143.85.0.0/18 Headquarters, USAISC 16,384
143.85.64.0/18 Headquarters, USAISC 16,384
143.85.128.0/18 Headquarters, USAISC 16,384
143.85.192.0/18 Headquarters, USAISC 16,384
192.156.0.0/18 MARINE CORPS CYBERSPACE OPERATIONS GROUP 16,384
198.97.128.0/18 Headquarters, USAISC 16,384
198.250.128.0/18 DoD Network Information Center 16,384
198.250.192.0/18 DoD Network Information Center 16,384
199.9.64.0/18 DoD Network Information Center 16,384
199.32.128.0/18 DoD Network Information Center 16,384
199.211.64.0/18 DoD Network Information Center 16,384
199.211.192.0/18 DoD Network Information Center 16,384
199.252.128.0/18 DoD Network Information Center 16,384
215.65.0.0/18 DoD Network Information Center 16,384
155.21.192.0/19 Headquarters, USAISC 8,192
192.138.32.0/19 DoD Network Information Center 8,192
192.172.0.0/19 DoD Network Information Center 8,192
198.97.96.0/19 DoD Network Information Center 8,192
198.250.192.0/19 DoD Network Information Center 8,192
192.138.64.0/20 DoD Network Information Center 4,096
192.156.64.0/20 MARINE CORPS CYBERSPACE OPERATIONS GROUP 4,096
192.188.208.0/20 Headquarters, USAISC 4,096
192.240.128.0/20 DoD Network Information Center 4,096
198.97.192.0/20 Headquarters, USAISC 4,096
198.97.240.0/20 DoD Network Information Center 4,096
198.250.224.0/20 DoD Network Information Center 4,096
199.114.32.0/20 Headquarters, USAISC 4,096
199.122.32.0/20 Headquarters, USAISC 4,096
199.211.176.0/20 DoD Network Information Center 4,096
199.225.0.0/20 DoD Network Information Center 4,096
199.252.32.0/20 DoD Network Information Center 4,096
192.86.112.0/21 Headquarters, USAISC 2,048
192.86.232.0/21 Headquarters, USAISC 2,048
192.108.8.0/21 Navy Network Information Center (NNIC) 2,048
192.108.176.0/21 Headquarters, USAISC 2,048
192.138.24.0/21 DoD Network Information Center 2,048
192.153.136.0/21 Headquarters, USAISC 2,048
192.153.144.0/21 Headquarters, USAISC 2,048
198.49.184.0/21 Headquarters, USAISC 2,048
198.97.72.0/21 Navy Network Information Center (NNIC) 2,048
198.97.192.0/21 Headquarters, USAISC 2,048
198.154.8.0/21 Air Force Systems Networking 2,048
198.250.240.0/21 DoD Network Information Center 2,048
199.122.56.0/21 Headquarters, USAISC 2,048
199.123.72.0/21 Headquarters, USAISC 2,048
199.123.80.0/21 Headquarters, USAISC 2,048
199.123.104.0/21 DoD Network Information Center 2,048
199.124.16.0/21 Headquarters, USAISC 2,048
204.37.8.0/21 DoD Network Information Center 2,048
192.129.64.0/22 Headquarters, USAISC 1,024
192.138.80.0/22 DoD Network Information Center 1,024
192.153.132.0/22 Headquarters, USAISC 1,024
192.187.4.0/22 Navy Network Information Center (NNIC) 1,024
192.240.144.0/22 DoD Network Information Center 1,024
198.154.72.0/22 DoD Network Information Center 1,024
6.16.172.0/23 Headquarters, USAISC 512
143.86.204.0/23 Headquarters, USAISC 512
146.55.22.0/23 Headquarters, USAISC 512
155.29.48.0/23 Headquarters, USAISC 512
155.29.166.0/23 Headquarters, USAISC 512
156.112.148.0/23 DoD Network Information Center 512
192.73.26.0/23 Headquarters, USAISC 512
192.73.28.0/23 Headquarters, USAISC 512
192.101.132.0/23 DoD Network Information Center 512
192.111.116.0/23 Navy Network Information Center (NNIC) 512
192.132.84.0/23 Headquarters, USAISC 512
192.153.244.0/23 DoD Network Information Center 512
192.156.80.0/23 MARINE CORPS CYBERSPACE OPERATIONS GROUP 512
199.122.4.0/23 DoD Network Information Center 512
199.123.122.0/23 Headquarters, USAISC 512
6.16.174.0/24 Headquarters, USAISC 256
6.64.181.0/24 Headquarters, USAISC 256
131.78.3.0/24 DoD Network Information Center 256
131.78.204.0/24 DoD Network Information Center 256
138.162.5.0/24 Navy Network Information Center (NNIC) 256
140.13.73.0/24 DoD Network Information Center 256
140.14.35.0/24 DoD Network Information Center 256
140.14.37.0/24 DoD Network Information Center 256
140.14.39.0/24 DoD Network Information Center 256
140.14.41.0/24 DoD Network Information Center 256
140.14.43.0/24 DoD Network Information Center 256
140.14.45.0/24 DoD Network Information Center 256
140.14.47.0/24 DoD Network Information Center 256
140.14.49.0/24 DoD Network Information Center 256
140.14.51.0/24 DoD Network Information Center 256
140.14.53.0/24 DoD Network Information Center 256
140.153.72.0/24 Headquarters, USAISC 256
143.81.103.0/24 Headquarters, USAISC 256
143.86.176.0/24 Headquarters, USAISC 256
144.251.43.0/24 DoD Network Information Center 256
146.55.124.0/24 Headquarters, USAISC 256
146.55.127.0/24 Headquarters, USAISC 256
192.41.202.0/24 DoD Network Information Center 256
192.42.41.0/24 Navy Network Information Center (NNIC) 256
192.86.252.0/24 Headquarters, USAISC 256
192.132.83.0/24 Headquarters, USAISC 256
192.240.129.0/24 DoD Network Information Center 256
198.25.0.0/24 DoD Network Information Center 256
199.123.91.0/24 Headquarters, USAISC 256
199.252.143.0/24 DoD Network Information Center 256
199.252.154.0/24 DoD Network Information Center 256
199.252.155.0/24 DoD Network Information Center 256
199.252.157.0/24 DoD Network Information Center 256
199.252.162.0/24 DoD Network Information Center 256
199.252.180.0/24 DoD Network Information Center 256
204.34.186.0/24 DoD Network Information Center 256
205.56.162.0/24 Navy Network Information Center (NNIC) 256
205.69.238.0/24 Navy Network Information Center (NNIC) 256
206.37.202.0/24 DoD Network Information Center 256
215.67.59.0/24 DoD Network Information Center 256

Netblock Company
2608:120::/32 United States Department of Defense (DoD)
2608:121::/32 United States Department of Defense (DoD)
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WHOIS Details

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                                                ASHandle:       AS721
                                                OrgID:          AS721
                                                ASName:         AS721
                                                ASNumber:       AS721
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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IP WHOIS API & Database

Hosted Domains

There are 368 domain names hosted across 299 IP addresses on this ASN.

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IP Address Domain Domains on this IP
55.55.55.55 ██████████ 16
55.22.145.238 ██████████ 9
55.84.55.102 ██████████ 7
136.213.40.36 ██████████ 7
55.223.52.2 ██████████ 6
131.57.48.17 █████████ 6
55.200.197.31 ██████████ 5
55.141.72.18 ██████████ 4
55.76.177.85 ██████████ 4
55.2.31.17 ██████████ 4

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Peers

There are 4 peers for this ASN.

Peers Name
AS27064 United States Department of Defense (DoD)
AS27065 United States Department of Defense (DoD)
AS27066 United States Department of Defense (DoD)
AS3356 Level 3 Parent, LLC
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS3356 Level 3 Parent, LLC
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ASN API & Database

Downstreams

There are 3 downstreams for this ASN.

Downstreams Name
AS27064 United States Department of Defense (DoD)
AS27065 United States Department of Defense (DoD)
AS27066 United States Department of Defense (DoD)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Pingable IPs

55 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
214.43.143.121 AS721 United States Department of Defense (DoD) 10.20ms from Dallas, US
207.132.240.40 AS721 United States Department of Defense (DoD) 10.12ms from Dallas, US
138.162.5.145 AS721 United States Department of Defense (DoD) 9.99ms from Dallas, US
214.1.217.97 AS721 United States Department of Defense (DoD) 9.98ms from Dallas, US
214.38.136.10 AS721 United States Department of Defense (DoD) 10.08ms from Dallas, US
214.43.140.54 AS721 United States Department of Defense (DoD) 10.11ms from Dallas, US
199.252.157.234 AS721 United States Department of Defense (DoD) 3.00ms from Honolulu, US
205.110.38.67 AS721 United States Department of Defense (DoD) 10.33ms from Charlotte, US
215.65.126.185 AS721 United States Department of Defense (DoD) 10.16ms from Dallas, US
207.133.192.8 AS721 United States Department of Defense (DoD) 36.09ms from Los Angeles, US
214.4.154.94 AS721 United States Department of Defense (DoD) 10.10ms from Dallas, US
214.4.152.3 AS721 United States Department of Defense (DoD) 11.04ms from Chicago, US
199.252.180.243 AS721 United States Department of Defense (DoD) 3.01ms from Honolulu, US
214.4.150.248 AS721 United States Department of Defense (DoD) 11.08ms from Chicago, US
131.78.136.82 AS721 United States Department of Defense (DoD) 10.07ms from Dallas, US
131.78.134.82 AS721 United States Department of Defense (DoD) 10.08ms from Dallas, US
209.22.120.14 AS721 United States Department of Defense (DoD) 10.11ms from Dallas, US
131.78.81.254 AS721 United States Department of Defense (DoD) 10.06ms from Dallas, US
199.208.197.36 AS721 United States Department of Defense (DoD) 10.09ms from Dallas, US
214.37.136.50 AS721 United States Department of Defense (DoD) 10.10ms from Dallas, US
214.25.107.11 AS721 United States Department of Defense (DoD) 10.06ms from Dallas, US
214.81.217.49 AS721 United States Department of Defense (DoD) 10.00ms from Dallas, US
199.252.155.251 AS721 United States Department of Defense (DoD) 5.23ms from Frankfurt am Main, DE
199.211.150.66 AS721 United States Department of Defense (DoD) 10.10ms from Dallas, US
214.16.4.6 AS721 United States Department of Defense (DoD) 11.07ms from Chicago, US

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address ASN Details
74.214.47.1 AS11776 Breezeline 4.03ms from Ashburn, US
96.103.69.113 AS7922 Comcast Cable Communications, LLC 0.41ms from Ashburn, US
69.246.160.1 AS7922 Comcast Cable Communications, LLC 7.58ms from Atlanta, US
112.126.58.145 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 1.93ms from Beijing, CN
47.247.16.81 AS55836 Reliance Jio Infocomm Limited 6.99ms from Bengaluru, IN
44.230.156.1 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
98.172.161.145 AS22773 Cox Communications Inc. 2.67ms from Boston, US
82.155.238.1 AS3243 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 5.11ms from Braga, PT
181.90.64.1 AS7303 Telecom Argentina S.A. 1.69ms from Buenos Aires, AR
74.142.41.129 AS10796 Charter Communications Inc 9.46ms from Columbus, US
14.143.226.193 AS4755 TATA Communications formerly VSNL is Leading ISP 0.74ms from Delhi, IN
117.240.147.177 AS9829 National Internet Backbone 13.76ms from Delhi, IN
67.207.44.33 AS36103 Central Utah Telephone, Inc. 1.44ms from Draper, US
75.158.97.1 AS852 TELUS Communications Inc. 1.51ms from Edmonton, CA
193.11.106.1 AS1653 Vetenskapsradet / SUNET 3.04ms from Goeteborg, SE
114.135.81.1 AS4134 CHINANET-BACKBONE 5.42ms from Guiyang, CN
1.28.189.113 AS4837 CHINA UNICOM China169 Backbone 11.19ms from Hohhot, CN
72.235.118.1 AS36149 Hawaiian Telcom Services Company, Inc. 1.97ms from Honolulu, US
222.221.177.1 AS4134 CHINANET-BACKBONE 0.69ms from Kunming, CN
46.219.25.1 AS31148 Freenet LTD 2.21ms from Kyiv, UA
79.78.34.145 AS13285 TalkTalk Communications Limited 17.49ms from London, GB
68.121.78.209 AS7018 AT&T Enterprises, LLC 4.12ms from Los Angeles, US
79.86.135.1 AS15557 Societe Francaise Du Radiotelephone - SFR SA 3.27ms from Lyon, FR
109.23.183.1 AS15557 Societe Francaise Du Radiotelephone - SFR SA 12.41ms from Lyon, FR
185.152.173.1 AS212714 Canal Pozuelo S.L. 3.76ms from Madrid, ES

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

$
traceroute -a -n -q1 -f3 -m9 192.108.13.91
traceroute to 192.108.13.91 (192.108.13.91): 9 hops max, 52 byte packets
4 *
5 *
6 [AS3356] 64.159.250.178 174.965 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Abidjan, CI
On

Related Networks

What is an ASN?

Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP. Find out more about AS721 at robtex.

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