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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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
77.175.62.17 AS1136 KPN B.V. 1.48ms from Amsterdam, NL
85.222.226.113 AS35470 Signet B.V. 0.65ms from Amsterdam, NL
75.184.41.1 AS11426 Charter Communications Inc 9.02ms from Ashburn, US
70.169.154.193 AS22773 Cox Communications Inc. 6.20ms from Ashburn, US
64.82.174.1 AS46687 BCI Mississippi Broadband,LLC 13.87ms from Atlanta, US
65.83.85.33 AS6389 AT&T Enterprises, LLC 11.95ms from Atlanta, US
27.184.144.1 AS4134 CHINANET-BACKBONE 8.84ms from Beijing, CN
111.164.240.1 AS4837 CHINA UNICOM China169 Backbone 4.88ms from Beijing, CN
186.22.142.1 AS27747 Telecentro S.A. 0.79ms from Buenos Aires, AR
181.169.190.1 AS7303 Telecom Argentina S.A. 13.55ms from Buenos Aires, AR
75.152.108.1 AS852 TELUS Communications Inc. 1.15ms from Calgary, CA
47.248.227.129 AS33363 Charter Communications, Inc 6.01ms from Chicago, US
137.128.12.49 AS668 United States Department of Defense (DoD) 4.24ms from Chicago, US
124.162.34.1 AS4837 CHINA UNICOM China169 Backbone 0.42ms from Chongqing, CN
41.82.80.33 AS8346 SONATEL-AS Autonomous System 3.47ms from Dakar, SN
104.145.106.1 AS23473 PAVLOV MEDIA INC 1.77ms from Dallas, US
216.162.97.1 AS46853 Southwest Texas Communications 13.31ms from Dallas, US
108.86.214.113 AS7018 AT&T Enterprises, LLC 3.01ms from Dallas, US
207.155.33.81 AS7029 Windstream Communications LLC 9.15ms from Dallas, US
124.123.18.1 AS18209 Atria Convergence Technologies Ltd., 0.30ms from Delhi, IN
209.206.85.1 AS395555 ELEVATE 6.74ms from Denver, US
50.73.177.81 AS7922 Comcast Cable Communications, LLC 14.17ms from Detroit, US
24.142.4.1 AS11260 EastLink 8.92ms from Edmonton, CA
147.92.79.33 AS54182 Bell Canada 5.48ms from Edmonton, CA
64.38.188.1 AS396032 GigabitNow Norcal, LLC 5.43ms from Fremont, US

Traceroute

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

$
traceroute -a -n -q1 -f4 -m7 55.24.81.77
traceroute to 55.24.81.77 (55.24.81.77): 7 hops max, 52 byte packets
4 [AS9002] 87.245.238.7 0.848 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Bishkek, KG
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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