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 36 years ago on Jun 30, 1989
Updated 3 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
217.123.170.1 AS33915 Vodafone Libertel B.V. 5.59ms from Amsterdam, NL
75.110.235.1 AS19108 Optimum 14.18ms from Ashburn, US
97.81.242.1 AS20115 Charter Communications LLC 14.83ms from Atlanta, US
165.166.237.33 AS2711 Spirit Communications 0.33ms from Atlanta, US
112.57.64.193 AS9808 China Mobile Communications Group Co., Ltd. 5.19ms from Beijing, CN
186.144.160.1 AS10620 Telmex Colombia S.A. 3.99ms from Bogota, CO
200.26.129.161 AS14080 Telmex Colombia S.A. 1.26ms from Bogota, CO
70.183.164.129 AS22773 Cox Communications Inc. 3.20ms from Boston, US
181.47.172.1 AS27747 Telecentro S.A. 1.30ms from Buenos Aires, AR
201.235.74.1 AS7303 Telecom Argentina S.A. 13.58ms from Buenos Aires, AR
139.208.218.1 AS4837 CHINA UNICOM China169 Backbone 8.92ms from Changchun, CN
129.176.98.33 AS7973 Mayo Foundation for Medical Education and Research 11.91ms from Chicago, US
173.197.239.177 AS10796 Charter Communications Inc 3.64ms from Columbus, US
93.160.130.193 AS3292 TDC Holding A/S 2.88ms from Copenhagen, DK
181.104.33.33 AS7303 Telecom Argentina S.A. 0.66ms from Cordoba, AR
170.94.129.193 AS21852 State Of Arkansas, Division of Information Systems 10.53ms from Dallas, US
209.214.68.65 AS7018 AT&T Enterprises, LLC 1.67ms from Dallas, US
176.202.47.1 AS8781 Ooredoo Q.S.C. 0.24ms from Doha, QA
94.200.57.225 AS15802 Emirates Integrated Telecommunications Company PJSC 2.96ms from Dubai, AE
189.23.113.241 AS4230 CLARO S.A. 11.21ms from Fortaleza, BR
122.236.130.193 AS4134 CHINANET-BACKBONE 6.33ms from Hangzhou, CN
185.68.152.1 AS59651 AS QualityNetwork 0.68ms from Helsinki, FI
115.245.250.161 AS55836 Reliance Jio Infocomm Limited 1.88ms from Hyderabad, IN
212.68.55.1 AS60446 Datema Bilisim Ticaret Anonim Sirketi 0.17ms from Istanbul, TR
61.159.195.1 AS4134 CHINANET-BACKBONE 0.48ms from Kunming, CN

Traceroute

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

$
traceroute -a -n -q1 -m4 55.24.105.110
traceroute to 55.24.105.110 (55.24.105.110): 4 hops max, 52 byte packets
1 [AS399244] 66.59.208.1 0.274 ms
2 *
3 *
4 *
Measurement taken from IPinfo ProbeNet in Falkenstein, DE
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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