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 4 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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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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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
31.215.64.1 AS5384 Emirates Internet 3.55ms from Al Fujairah City, AE
188.201.199.33 AS1136 KPN B.V. 2.95ms from Amsterdam, NL
77.250.198.1 AS33915 Vodafone Libertel B.V. 3.77ms from Amsterdam, NL
84.106.185.1 AS33915 Vodafone Libertel B.V. 1.50ms from Amsterdam, NL
206.219.240.1 AS773 Parsons Corporation 5.08ms from Ashburn, US
165.166.237.33 AS2711 Spirit Communications 0.35ms from Atlanta, US
110.171.234.1 AS17552 True Online 14.49ms from Bangkok, TH
171.100.10.225 AS7470 TRUE INTERNET Co.,Ltd. 1.61ms from Bangkok, TH
186.144.160.1 AS10620 Telmex Colombia S.A. 3.64ms from Bogotá, CO
78.97.80.1 AS12302 Vodafone Romania S.A. 1.50ms from Bucharest, RO
139.213.109.225 AS4837 CHINA UNICOM China169 Backbone 3.46ms from Changchun, CN
75.182.201.113 AS11426 Charter Communications Inc 8.80ms from Charlotte, US
139.200.78.129 AS4134 CHINANET-BACKBONE 4.90ms from Chengdu, CN
221.237.92.1 AS4134 CHINANET-BACKBONE 2.53ms from Chengdu, CN
175.101.149.241 AS17754 Excellmedia 12.10ms from Chennai, IN
209.74.127.1 AS54373 Message Express Internet 5.00ms from Chicago, US
193.107.98.193 AS48480 S.C. AltNet C.C. S.R.L. 0.33ms from Chisinau, MD
152.171.222.1 AS7303 Telecom Argentina S.A. 0.94ms from Cordoba, AR
172.108.5.1 AS5650 Frontier Communications of America, Inc. 1.70ms from Dallas, US
5.231.255.145 AS12586 GHOSTnet GmbH 0.20ms from Frankfurt am Main, DE
61.159.195.1 AS4134 CHINANET-BACKBONE 6.94ms from Guiyang, CN
70.184.221.1 AS22773 Cox Communications Inc. 4.84ms from Kansas City, US
115.160.213.193 AS17762 Tata Teleservices Maharashtra Ltd 1.15ms from Lohogaon, IN
5.80.122.129 AS2856 British Telecommunications PLC 4.25ms from London, GB
38.148.221.209 AS8796 FASTNET DATA INC 0.29ms from Los Angeles, US

Traceroute

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

$
traceroute -a -n -q1 -f3 -m11 55.24.76.177
traceroute to 55.24.76.177 (55.24.76.177): 11 hops max, 52 byte packets
4 *
5 *
6 *
7 *
8 [AS3356] 212.133.24.61 2.914 ms
9 *
10 *
11 *
Measurement taken from IPinfo ProbeNet in Brussels, BE
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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