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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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
31.215.64.1 AS5384 Emirates Internet 3.82ms from Al Fujairah City, AE
83.84.103.1 AS33915 Vodafone Libertel B.V. 0.92ms from Amsterdam, NL
217.62.161.1 AS33915 Vodafone Libertel B.V. 2.91ms from Amsterdam, NL
168.245.202.1 AS58580 Fastrack Technology 0.25ms from Ashburn, US
204.92.74.1 AS701 Verizon Business 12.18ms from Ashburn, US
79.130.158.129 AS6799 Ote SA (Hellenic Telecommunications Organisation) 1.25ms from Athens, GR
173.23.18.17 AS30036 Mediacom Communications Corp 19.76ms from Atlanta, US
73.137.20.1 AS7922 Comcast Cable Communications, LLC 1.66ms from Atlanta, US
110.171.234.1 AS17552 True Online 14.24ms from Bangkok, TH
1.4.160.1 AS23969 TOT Public Company Limited 0.57ms from Bangkok, TH
123.249.94.225 AS55990 Huawei Cloud Service data center 3.62ms from Beijing, CN
203.63.26.49 AS2764 AAPT Limited 1.13ms from Brisbane, AU
84.2.129.81 AS5483 Magyar Telekom Plc. 5.12ms from Budapest, HU
181.228.86.1 AS7303 Telecom Argentina S.A. 2.72ms from Buenos Aires, AR
186.137.77.1 AS7303 Telecom Argentina S.A. 1.37ms from Buenos Aires, AR
209.174.230.33 AS6325 Illinois Century Network 9.95ms from Chicago, US
124.162.34.1 AS4837 CHINA UNICOM China169 Backbone 0.45ms from Chongqing, CN
74.143.252.177 AS10796 Charter Communications Inc 8.49ms from Cleveland, US
31.54.186.65 AS2856 British Telecommunications PLC 9.63ms from Erith, GB
90.102.180.129 AS3215 Orange S.A. 7.69ms from Frankfurt am Main, DE
64.38.188.1 AS396032 GigabitNow Norcal, LLC 5.38ms from Fremont, US
185.50.111.145 AS208988 Buchholz Digital GmbH 0.81ms from Hamburg, DE
125.118.137.1 AS4134 CHINANET-BACKBONE 5.60ms from Hangzhou, CN
1.228.3.129 AS9318 SK Broadband Co Ltd 1.49ms from Incheon, KR
139.179.142.1 AS8466 Ihsan Dogramaci Bilkent University 8.66ms from Istanbul, TR

Traceroute

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

$
traceroute -a -n -q1 -f2 -m7 55.24.211.46
traceroute to 55.24.211.46 (55.24.211.46): 7 hops max, 52 byte packets
2 [AS1299] 62.115.9.240 0.579 ms
3 *
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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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