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 6,400
IPv6 addresses 620,178,945,462,304,766,624,268,288
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
55.82.132.0/22 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
55.82.10.0/24 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)
2608:10b:3800::/40 United States Department of Defense (DoD)
2001:480:280::/48 High Performance Computing
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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:dddd::246:33 AS366 United States Department of Defense (DoD) 11.17ms 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
1.89.40.206 AS17429 BEIJING GEHUA CATV NETWORK CO.LTD 8.92ms from Beijing, CN
71.184.153.238 AS701 Verizon Business 1.80ms from Boston, US
212.89.226.14 AS12508 Rainside s.r.o. 0.32ms from Bratislava, SK
91.82.194.94 AS12301 Invitech ICT Services Kft. 0.68ms from Budapest, HU
174.126.106.110 AS11492 CABLE ONE, INC. 13.76ms from Dallas, US
129.119.198.30 AS1832 Southern Methodist University 1.29ms from Dallas, US
207.19.5.190 AS6620 AMA Communications, LLC 9.05ms from Dallas, US
190.214.57.30 AS28006 CORPORACION NACIONAL DE TELECOMUNICACIONES - CNT EP 2.54ms from Guayaquil, EC
203.26.201.126 AS135350 Immanuel College 9.79ms from Melbourne, AU
199.38.132.222 AS47019 Ergonomic Group Inc. 1.01ms from New York City, US
113.158.40.30 AS2516 KDDI CORPORATION 8.65ms from Osaka, JP
51.103.47.110 AS8075 Microsoft Corporation 0.18ms from Paris, FR
167.131.39.94 AS1798 State of Oregon 6.63ms from Portland, US
112.252.105.222 AS4837 CHINA UNICOM China169 Backbone 8.40ms from Qingdao, CN
85.45.187.14 AS3269 Telecom Italia S.p.A. 5.55ms from Rende, IT
50.248.221.62 AS7922 Comcast Cable Communications, LLC 6.92ms from Seattle, US
211.62.213.30 AS3786 LG DACOM Corporation 1.81ms from Seoul, KR
1.96.240.254 AS4766 Korea Telecom 2.17ms from Seoul, KR
220.79.99.158 AS4766 Korea Telecom 1.43ms from Seoul, KR
119.206.82.254 AS4766 Korea Telecom 5.28ms from Seoul, KR
1.170.203.62 AS3462 Data Communication Business Group 1.54ms from Taichung, TW
217.159.211.254 AS3249 Telia Eesti AS 0.28ms from Tallinn, EE
123.7.132.254 AS4837 CHINA UNICOM China169 Backbone 6.40ms from Zhengzhou, CN
132.252.88.254 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 4.08ms from Amsterdam, NL
63.238.110.30 AS13781 Hopkinsville Electric System 12.16ms from Atlanta, US

Traceroute

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

$
traceroute -a -n -q1 -m7 55.82.136.149
traceroute to 55.82.136.149 (55.82.136.149): 7 hops max, 52 byte packets
1 [AS397373] 155.254.18.1 509.689 ms
2 *
3 *
4 [AS3356] 4.39.210.90 30.786 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Bend, US
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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