Autonomous System details

AS366

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

United States

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AS366 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 0
IPv4 addresses 6,656
IPv6 addresses 311,902,861,460,574,328,400,000,000
ASN type Government
Registry arin
Allocated 37 years ago on Jun 30, 1989
Updated 7 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
55.82.132.0/22 Headquarters, USAISC 1,024
55.82.136.0/22 Headquarters, USAISC 1,024
55.82.148.0/22 Headquarters, USAISC 1,024
55.82.146.0/23 Headquarters, USAISC 512
55.82.5.0/24 Headquarters, USAISC 256
55.82.9.0/24 Headquarters, USAISC 256
55.82.10.0/24 Headquarters, USAISC 256
55.82.20.0/24 Headquarters, USAISC 256
55.82.53.0/24 Headquarters, USAISC 256
55.82.128.0/24 Headquarters, USAISC 256
55.82.129.0/24 Headquarters, USAISC 256
55.82.160.0/24 Headquarters, USAISC 256
55.82.200.0/24 Headquarters, USAISC 256
55.82.234.0/24 Headquarters, USAISC 256
55.82.245.0/24 Headquarters, USAISC 256
55.82.253.0/24 Headquarters, USAISC 256

Netblock Company
2608:10a:3600::/40 United States Department of Defense (DoD)
2001:480:280::/48 High Performance Computing
2608:10b:3823::/48 United States Department of Defense (DoD)
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WHOIS Details

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                                                ASHandle:       AS366
                                                OrgID:          AS366
                                                ASName:         AS366
                                                ASNumber:       AS366
                                                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 2 peers for this ASN.

Peers Name
AS306 United States Department of Defense (DoD)
AS668 United States Department of Defense (DoD)
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ASN API & Database

Upstreams

There are 2 upstreams for this ASN.

upstreams Name
AS306 United States Department of Defense (DoD)
AS668 United States Department of Defense (DoD)
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ASN API & Database

Downstreams

There are no downstreams for this ASN.

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ASN API & Database

Pingable IPs

1 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
2001:480:280:2421::237 AS366 United States Department of Defense (DoD) 0.36ms from Ashburn, US

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
75.91.177.78 AS7029 Windstream Communications LLC 14.87ms from Atlanta, US
96.65.147.158 AS7922 Comcast Cable Communications, LLC 12.25ms from Atlanta, US
45.91.7.78 AS214208 Elisteka UAB 0.17ms from Bucharest, RO
211.62.213.30 AS3786 LG DACOM Corporation 1.67ms from Incheon, KR
31.206.180.174 AS8386 Vodafone Net Iletisim Hizmetler AS 13.89ms from Istanbul, TR
71.38.68.254 AS209 CenturyLink Communications, LLC 2.75ms from Las Vegas, US
86.153.206.46 AS2856 British Telecommunications PLC 7.18ms from London, GB
63.196.158.254 AS7018 AT&T Enterprises, LLC 1.84ms from Los Angeles, US
147.10.250.254 AS135887 Belong (Telstra Limited) 2.00ms from Melbourne, AU
51.250.32.158 AS200350 Yandex.Cloud LLC 2.43ms from Moscow, RU
213.171.26.46 AS208677 Cloud Technologies LLC trading as Cloud.ru 1.00ms from Moscow, RU
129.102.96.254 AS2200 Renater 1.42ms from Paris, FR
213.6.78.174 AS12975 PALTEL Autonomous System 0.51ms from Ramallah, PS
177.17.230.142 AS18881 TELEFÔNICA BRASIL S.A 12.42ms from Rio de Janeiro, BR
206.121.54.190 AS7018 AT&T Enterprises, LLC 2.46ms from San Jose, US
190.167.175.14 AS6400 Compañía Dominicana de Teléfonos S. A. 2.92ms from Santo Domingo, DO
140.135.127.254 AS1659 Taiwan Academic Network (TANet) Information Center 1.90ms from Taipei, TW
126.2.117.126 AS17676 SoftBank Corp. 4.04ms from Tokyo, JP
126.36.163.126 AS17676 SoftBank Corp. 3.57ms from Tokyo, JP
150.249.193.94 AS2527 Sony Network Communications Inc. 0.96ms from Tokyo, JP
120.12.70.94 AS4837 CHINA UNICOM China169 Backbone 7.88ms from Beijing, CN
91.64.192.254 AS3209 Vodafone GmbH 2.95ms from Berlin, DE
73.143.85.190 AS7922 Comcast Cable Communications, LLC 7.64ms from Boston, US
175.16.230.110 AS4837 CHINA UNICOM China169 Backbone 3.21ms from Changchun, CN
91.196.33.206 AS207957 SERV.HOST GROUP LTD 0.13ms from Draper, 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 55.82.138.115
traceroute to 55.82.138.115 (55.82.138.115): 7 hops max, 52 byte packets
4 [AS21928] 100.199.0.57 0.073 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Liuzhou, CN
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 AS366 at robtex.

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