Autonomous System details

AS321

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

United States

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AS321 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 0
IPv4 addresses 66,304
IPv6 addresses 309,485,009,821,345,068,724,781,056
ASN type Government
Registry arin
Allocated 37 years ago on Jun 30, 1989
Updated 5 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
55.24.0.0/16 Headquarters, USAISC 65,536
55.24.20.0/24 Headquarters, USAISC 256
55.24.51.0/24 Headquarters, USAISC 256
55.24.87.0/24 Headquarters, USAISC 256
55.24.105.0/24 Headquarters, USAISC 256
55.24.229.0/24 Headquarters, USAISC 256
55.24.230.0/24 Headquarters, USAISC 256
55.24.231.0/24 Headquarters, USAISC 256
55.24.232.0/24 Headquarters, USAISC 256
55.24.234.0/24 Headquarters, USAISC 256
55.24.236.0/24 Headquarters, USAISC 256
55.24.251.0/24 Headquarters, USAISC 256
139.241.3.0/24 DoD Network Information Center 256
139.241.58.0/24 DoD Network Information Center 256
139.241.59.0/24 DoD Network Information Center 256

Netblock Company
2608:14a:3100::/40 United States Department of Defense (DoD)
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IP Ranges API

WHOIS Details

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                                                ASHandle:       AS321
                                                OrgID:          AS321
                                                ASName:         AS321
                                                ASNumber:       AS321
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are no domains currently hosted on this ASN.

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Peers

There are 5 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)
AS306 United States Department of Defense (DoD)
AS5374 United States Department of Defense (DoD)
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ASN API & Database

Upstreams

There are 4 upstreams for this ASN.

upstreams Name
AS27064 United States Department of Defense (DoD)
AS27065 United States Department of Defense (DoD)
AS27066 United States Department of Defense (DoD)
AS306 United States Department of Defense (DoD)
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ASN API & Database

Downstreams

There is 1 peer for this ASN.

Downstreams Name
AS5374 United States Department of Defense (DoD)
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ASN API & Database

Pingable IPs

No IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

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
67.209.194.161 AS21782 Plateau Telecommunications Incorporated 1.23ms from Albuquerque, US
94.249.92.1 AS8376 Jordan Data Communications Company LLC 1.09ms from Amman, JO
217.62.161.1 AS33915 Vodafone Libertel B.V. 2.80ms from Amsterdam, NL
80.115.25.1 AS33915 Vodafone Libertel B.V. 1.47ms from Amsterdam, NL
68.98.184.1 AS22773 Cox Communications Inc. 1.31ms from Ashburn, US
206.219.240.1 AS773 Parsons Corporation 4.79ms from Ashburn, US
64.53.98.1 AS22646 Hargray Communications Group, Inc. 8.14ms from Atlanta, US
219.143.71.193 AS4847 China Networks Inter-Exchange 4.54ms from Beijing, CN
178.5.32.1 AS3209 Vodafone GmbH 0.51ms from Berlin, DE
49.177.144.1 AS4804 Microplex PTY LTD 1.23ms from Brisbane, AU
152.169.109.1 AS7303 Telecom Argentina S.A. 17.12ms from Buenos Aires, AR
78.166.111.81 AS9121 Turk Telekomunikasyon Anonim Sirketi 7.56ms from Bursa, TR
222.162.6.1 AS4837 CHINA UNICOM China169 Backbone 5.96ms from Changchun, CN
220.169.145.97 AS4134 CHINANET-BACKBONE 8.24ms from Changsha, CN
118.120.252.1 AS4134 CHINANET-BACKBONE 5.86ms from Chengdu, CN
121.241.246.33 AS4755 TATA Communications formerly VSNL is Leading ISP 0.49ms from Chennai, IN
75.103.152.1 AS19751 Endeavor Communications 4.95ms from Chicago, US
24.15.16.1 AS7922 Comcast Cable Communications, LLC 1.38ms from Chicago, US
181.98.241.1 AS7303 Telecom Argentina S.A. 0.66ms from Cordoba, AR
64.130.73.129 AS13693 Vexus Fiber 10.03ms from Dallas, US
75.64.136.1 AS7922 Comcast Cable Communications, LLC 14.15ms from Dallas, US
5.230.81.225 AS12586 GHOSTnet GmbH 0.22ms from Frankfurt am Main, DE
63.217.17.49 AS3491 PCCW Global, Inc. 0.48ms from Hong Kong, HK
49.28.163.1 AS4766 Korea Telecom 6.90ms from Incheon, KR
112.77.101.1 AS9316 DACOM-PUBNETPLUS 1.83ms from Incheon, KR

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 55.24.39.102
traceroute to 55.24.39.102 (55.24.39.102): 9 hops max, 52 byte packets
4 *
5 *
6 [AS3356] 209.244.209.46 31.316 ms
7 *
8 *
9 *
Measurement taken from IPinfo ProbeNet in Dallas, US
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 AS321 at robtex.

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