AS721

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Summary

IP address summary information
Name	United States Department of Defense (DoD)
Country	United States
Website	host.io/mail.mil·mail.mil
Hosted domains	372
IPv4 addresses	72,226,048
IPv6 addresses	1.58 × 10²⁹
ASN type	Government
Registry	ARIN
Allocated	56 years ago on Jan 1, 1970
Updated	1 year ago on Sep 12, 2025

Ranking

#1,938

Overall rank

among 74,696 networks

Traffic

#7,232

Infrastructure

#1,168

#325inUnited States

Learn how ASN rankings work

Geolocation

Share of IPv4 footprint per hexagonLessMore

Countries by IPv4 share

United States
100%

Held location over 90 days: 83%
Held location over 1 year: 92%
Median days between moves: 35 days
Geolocation scope: National

How consistently this network's IPs hold their geolocation. Read relative to the network type, not as a quality score.

Activity

A pronounced day/night rhythm — the signature of a consumer/eyeball network whose users sleep at night.

Mon

IP Ranges

Netblock	Company	Num of IPs
55.0.0.0/8	United States Department of Defense (DoD)	16,777,216
214.0.0.0/8	United States Department of Defense (DoD)	16,777,216
215.0.0.0/9	United States Department of Defense (DoD)	8,388,608
132.0.0.0/10	United States Department of Defense (DoD)	4,194,304
131.32.0.0/11	United States Department of Defense (DoD)	2,097,152
132.96.0.0/11	United States Department of Defense (DoD)	2,097,152
205.64.0.0/11	United States Department of Defense (DoD)	2,097,152
132.80.0.0/12	United States Department of Defense (DoD)	1,048,576
132.128.0.0/12	United States Department of Defense (DoD)	1,048,576
138.144.0.0/12	United States Department of Defense (DoD)	1,048,576

IP Ranges

WHOIS


  ASHandle:       █████
  OrgID:          █████
  ASName:         ██████
  ASNumber:       AS█████
  RegDate:        ████-██-██
  Updated:        ████-██-██
  TechHandle:     ████-████
  Source:         ████

Hosted Domains

There are 372 domain names hosted across 272 IP addresses on this ASN.

IP Address	Domain	Count
148.49.23.144		20
136.213.40.36		7
55.223.52.2		6
131.57.48.17		5
148.49.23.145		4

Places

Peers

There are 4 peers for this ASN.

ASN	Name	Rank
AS3356	Level 3 Parent, LLC
AS27064	United States Department of Defense (DoD)
AS27065	United States Department of Defense (DoD)
AS27066	United States Department of Defense (DoD)

Upstreams

There are 1 upstreams for this ASN.

ASN	Name	Rank
AS3356	Level 3 Parent, LLC

Downstreams

There are 3 downstreams for this ASN.

ASN	Name	Rank
AS27064	United States Department of Defense (DoD)
AS27065	United States Department of Defense (DoD)
AS27066	United States Department of Defense (DoD)

Pingable IPs

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

IP Address	ASN	Details
140.14.49.130 Ping	AS721United States Department of Defense (DoD)	16.52ms from London, GB
140.14.51.130 Ping	AS721United States Department of Defense (DoD)	8.27ms from Frankfurt am Main, DE

Other Pingable IPs

IP Address	ASN	Details
51.241.111.113 Ping	AS212238Datacamp Limited	1.02ms from Amsterdam, NL
216.33.114.193 Ping	AS3561CenturyLink Communications, LLC	0.72ms from Ashburn, US
141.156.233.1 Ping	AS701Verizon Business	2.55ms from Ashburn, US
64.139.232.1 Ping	AS35986Vyve Broadband	6.56ms from Atlanta, US
69.241.229.17 Ping	AS7922Comcast Cable Communications, LLC	7.37ms from Atlanta, US
124.121.180.1 Ping	AS17552True Online	2.37ms from Bangkok, TH
178.116.16.1 Ping	AS6848Telenet BV	3.29ms from Brussels, BE
84.117.144.1 Ping	AS12302Vodafone Romania S.A.	13.28ms from Bucharest, RO
152.168.15.1 Ping	AS7303Telecom Argentina S.A.	16.89ms from Buenos Aires, AR
190.195.235.1 Ping	AS7303Telecom Argentina S.A.	1.60ms from Buenos Aires, AR

Pingable IPs

Important routers in AS721


132.140.100.1	Sierra Vista, United States
132.6.0.1	Montgomery, United States
143.143.143.1	Montgomery, United States
132.11.1.1	Montgomery, United States
143.143.143.143	Montgomery, United States

Important routers in AS721

Traceroute

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

$ traceroute -a -n -q1 -f2 -m12 207.132.30.111

traceroute to 207.132.30.111 (207.132.30.111): 12 hops max, 52 byte packets

2 [AS50293] 193.39.195.73 64.194 ms

3 [AS174] 149.6.145.1 65.133 ms

4 [AS174] 154.54.61.214 68.935 ms

5 [AS174] 154.54.61.101 81.907 ms

6 [AS174] 154.54.61.130 86.22 ms

7 [AS174] 130.117.14.46 105.123 ms

8 [AS3356] 4.69.132.54 196.657 ms

9 [AS3356] 64.159.215.38 206.434 ms

10 *

11 *

12 *

Measurement taken from

IPinfo ProbeNet in Abidjan, CI

On September 17, 2026

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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AS721

Summary

Ranking

Geolocation

Countries by IPv4 share

Activity

IP Ranges

IP Ranges

WHOIS

Hosted Domains

Places

Peers

Upstreams

Downstreams

Pingable IPs

Other Pingable IPs

Pingable IPs

Important routers in AS721

Important routers in AS721

Traceroute

Related Networks

AS13860

AS16901

AS19513

AS20421

AS213

What is an ASN?

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

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Pingable IPs

Other Pingable IPs

Traceroute

Ranking

Important routers in AS721

Geolocation

Countries by IPv4 share

Activity

IP Ranges

AS13860

AS16901

AS19513

AS20421

AS213

AS402339