Autonomous System details

AS721

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

United States

VPN

Need more data or want to access it via API or data downloads? Sign up to get free access

AS721 – United States Department of Defense (DoD)

Field	Value
Country	United States
Website	mail.mil
Hosted domains	408
IPv4 addresses	72,224,000
IPv6 addresses	158,456,325,028,528,676,000,000,000,000
ASN type	Government
Registry	arin
Allocated	56 years ago on Jan 01, 1970
Updated	7 months ago on Sep 12, 2025

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
148.48.0.0/15	DoD Network Information Center	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
214.40.0.0/16	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
192.172.0.0/19	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)

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.

IP Ranges API

WHOIS Details

Join for free to view WHOIS details ›


                                                ASHandle:       AS721
                                                OrgID:          AS721
                                                ASName:         AS721
                                                ASNumber:       AS721
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.

IP WHOIS API & Database

Hosted Domains

There are 408 domain names hosted across 303 IP addresses on this ASN.

Join for free to explore hosted domains ›

IP Address	Domain	Domains on this IP
148.49.23.144	██████████	19
136.213.40.36	██████████	7
131.57.48.17	██████████	6
55.223.52.2	██████████	6
55.200.197.31	██████████	5
55.141.72.18	██████████	4
140.153.192.17	██████████	3
148.49.23.145	██████████	3
55.66.77.88	██████████	2
55.222.169.231	██████████	2

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.

Useful for Cybersecurity

Hosted Domains API & Database

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

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

Upstreams

There is 1 peer for this ASN.

upstreams	Name
AS3356	Level 3 Parent, LLC

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

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

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

IP Address	ASN	Details
214.2.202.167	AS721 United States Department of Defense (DoD)	`11.18ms` from Dallas, US
199.211.218.7	AS721 United States Department of Defense (DoD)	`11.75ms` from Hamburg, DE
138.141.0.74	AS721 United States Department of Defense (DoD)	`101.81ms` from Hamilton, BM
199.211.150.66	AS721 United States Department of Defense (DoD)	`62.23ms` from Hamilton, BM
140.14.49.130	AS721 United States Department of Defense (DoD)	`20.64ms` from London, GB
199.252.143.243	AS721 United States Department of Defense (DoD)	`15.55ms` from Amsterdam, NL
214.2.203.213	AS721 United States Department of Defense (DoD)	`15.64ms` from Ashburn, US
214.1.119.97	AS721 United States Department of Defense (DoD)	`15.76ms` from Ashburn, US
214.59.168.156	AS721 United States Department of Defense (DoD)	`10.80ms` from Dallas, US
199.252.180.243	AS721 United States Department of Defense (DoD)	`43.09ms` from Hamilton, BM
206.38.35.3	AS721 United States Department of Defense (DoD)	`113.47ms` from Vienna, AT
214.76.140.24	AS721 United States Department of Defense (DoD)	`10.82ms` from Dallas, US
214.59.147.220	AS721 United States Department of Defense (DoD)	`10.81ms` from Dallas, US
214.59.131.79	AS721 United States Department of Defense (DoD)	`10.85ms` from Dallas, US
214.59.130.167	AS721 United States Department of Defense (DoD)	`10.78ms` from Dallas, US
214.1.127.205	AS721 United States Department of Defense (DoD)	`127.47ms` from Fortaleza, BR
158.9.212.194	AS721 United States Department of Defense (DoD)	`138.93ms` from Frankfurt am Main, DE
214.43.143.121	AS721 United States Department of Defense (DoD)	`62.62ms` from Hamilton, BM
205.73.236.84	AS721 United States Department of Defense (DoD)	`24.87ms` from Hamilton, BM
199.252.157.234	AS721 United States Department of Defense (DoD)	`42.92ms` from Hamilton, BM
138.137.29.33	AS721 United States Department of Defense (DoD)	`3.34ms` from Honolulu, US
214.81.217.40	AS721 United States Department of Defense (DoD)	`10.76ms` from Dallas, US
214.2.188.151	AS721 United States Department of Defense (DoD)	`11.03ms` from Dallas, US
209.22.120.14	AS721 United States Department of Defense (DoD)	`63.13ms` from Hamilton, BM
138.137.32.149	AS721 United States Department of Defense (DoD)	`3.35ms` from Honolulu, 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
82.72.236.1	AS33915 Vodafone Libertel B.V.	`5.03ms` from Amsterdam, NL
132.250.172.177	AS48 Navy Network Information Center (NNIC)	`0.24ms` from Ashburn, US
68.163.69.1	AS701 Verizon Business	`3.42ms` from Ashburn, US
96.19.50.1	AS11492 CABLE ONE, INC.	`4.14ms` from Atlanta, US
24.196.205.1	AS20115 Charter Communications LLC	`15.17ms` from Atlanta, US
146.85.104.1	AS400186 Singing River Connect, LLC	`14.81ms` from Atlanta, US
1.20.89.1	AS23969 TOT Public Company Limited	`5.90ms` from Bangkok, TH
218.68.4.161	AS4837 CHINA UNICOM China169 Backbone	`5.77ms` from Beijing, CN
82.82.176.1	AS3209 Vodafone GmbH	`5.14ms` from Berlin, DE
73.142.186.225	AS7922 Comcast Cable Communications, LLC	`4.47ms` from Boston, US
186.123.186.1	AS11664 Techtel LMDS Comunicaciones Interactivas S.A.	`17.93ms` from Buenos Aires, AR
111.26.61.193	AS134810 China Mobile Group JiLin communications corporation	`3.70ms` from Changchun, CN
112.45.130.129	AS9808 China Mobile Communications Group Co., Ltd.	`10.28ms` from Chengdu, CN
149.6.48.33	AS174 Cogent Communications, LLC	`1.48ms` from Copenhagen, DK
59.46.157.129	AS134762 CHINANET Liaoning province Dalian MAN network	`0.61ms` from Dalian, CN
70.124.231.1	AS11427 Charter Communications Inc	`13.10ms` from Dallas, US
99.153.75.129	AS7018 AT&T Enterprises, LLC	`7.69ms` from Dallas, US
18.197.157.49	AS16509 Amazon.com, Inc.	`0.12ms` from Frankfurt am Main, DE
212.108.168.33	AS29014 ScaleUp Technologies GmbH & Co. KG	`0.43ms` from Hamburg, DE
125.120.212.129	AS4134 CHINANET-BACKBONE	`5.05ms` from Hangzhou, CN
39.184.237.1	AS56041 China Mobile communications corporation	`7.63ms` from Hangzhou, CN
113.3.34.1	AS4837 CHINA UNICOM China169 Backbone	`4.81ms` from Harbin, CN
213.28.34.1	AS1759 Telia Finland Oyj	`2.35ms` from Helsinki, FI
115.160.137.49	AS9381 HKBN Enterprise Solutions HK Limited	`0.68ms` from Hong Kong, HK
66.151.72.97	AS13791 Unitas Global	`3.04ms` from Houston, US

Traceroute

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

traceroute -a -n -q1 -m5 132.14.144.177

traceroute to 132.14.144.177 (132.14.144.177): 5 hops max, 52 byte packets

1 [AS31898] 140.91.242.3 0.066 ms

2 [AS15802] 91.74.125.170 1.119 ms

3 *

4 *

5 *

Measurement taken from

IPinfo ProbeNet in Abu Dhabi, AE

On April 13th 2026

Related Networks

AS10379

Deluxe Corporation

More details

AS26875

Heartland Bank and Trust Company

More details

AS393913

The RealReal Inc.

More details

AS398086

SUNY Morrisville

More details

AS398142

Independence Television Company Inc

More details

AS401508

Inngest Inc.

More details

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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales