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 37 years ago on Jun 30, 1989
Updated 4 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) 11.33ms 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
188.226.205.142 AS14061 DigitalOcean, LLC 0.18ms from Amsterdam, NL
59.160.34.158 AS4755 TATA Communications formerly VSNL is Leading ISP 0.44ms from Bengaluru, IN
109.138.77.142 AS5432 Proximus NV 2.18ms from Brussels, BE
149.76.212.174 AS11976 Fidelity Communication International Inc. 15.19ms from Chicago, US
200.146.34.206 AS18881 TELEFÔNICA BRASIL S.A 2.97ms from Curitiba, BR
78.16.152.30 AS2110 Enet Communications LIMITED 7.57ms from Dublin, IE
14.167.57.238 AS45899 VNPT Corp 2.39ms from Hanoi, VN
64.227.46.94 AS14061 DigitalOcean, LLC 0.26ms from London, GB
68.77.247.174 AS7018 AT&T Enterprises, LLC 2.23ms from Los Angeles, US
81.185.123.222 AS15557 Societe Francaise Du Radiotelephone - SFR SA 7.53ms from Lyon, FR
151.233.159.158 AS58224 Iran Telecommunication Company PJS 17.65ms from Manama, BH
69.57.26.254 AS15350 Algona Municipal Utilities 9.80ms from Minneapolis, US
156.99.142.254 AS1998 State of Minnesota 2.94ms from Minneapolis, US
180.11.2.78 AS4713 NTT DOCOMO BUSINESS,Inc. 2.46ms from Osaka, JP
185.208.249.174 AS16347 ADISTA SAS 11.57ms from Paris, FR
109.239.119.254 AS34949 IDLINE SAS 7.62ms from Paris, FR
184.98.78.126 AS209 CenturyLink Communications, LLC 2.28ms from Phoenix, US
99.30.155.222 AS7018 AT&T Enterprises, LLC 4.27ms from Redding, US
20.225.118.238 AS8075 Microsoft Corporation 0.24ms from San Antonio, US
201.111.21.78 AS8151 UNINET 10.04ms from Santiago de Queretaro, MX
121.141.182.62 AS4766 Korea Telecom 1.19ms from Seoul, KR
175.194.13.254 AS4766 Korea Telecom 1.78ms from Seoul, KR
221.161.55.254 AS4766 Korea Telecom 7.06ms from Seoul, KR
222.120.250.94 AS4766 Korea Telecom 1.11ms from Seoul, KR
115.21.133.222 AS4766 Korea Telecom 1.43ms from Seoul, KR

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 55.82.20.28
traceroute to 55.82.20.28 (55.82.20.28): 7 hops max, 52 byte packets
2 [AS1241] 193.92.130.21 17.29 ms
3 *
4 [AS1241] 213.16.247.5 17.876 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Volos, GR
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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