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 620,178,945,462,304,766,624,268,288
ASN type Government
Registry arin
Allocated 37 years ago on Jun 30, 1989
Updated 5 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)
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::296:42 AS366 United States Department of Defense (DoD) 1.60ms from Atlanta, 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
132.252.88.254 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 4.02ms from Amsterdam, NL
128.172.212.254 AS16643 Virginia Commonwealth University 4.99ms from Ashburn, US
73.80.41.222 AS7922 Comcast Cable Communications, LLC 8.95ms from Ashburn, US
173.16.247.190 AS30036 Mediacom Communications Corp 13.38ms from Atlanta, US
92.62.168.254 AS24634 Transmog Inc S.A.L 0.92ms from Beirut, LB
153.90.187.206 AS13476 Montana State University 3.01ms from Billings, US
168.250.54.254 AS36651 Catholic HealthCare Partners 4.74ms from Columbus, US
14.166.157.174 AS45899 VNPT Corp 4.11ms from Hanoi, VN
42.98.252.254 AS4760 HKT Limited 0.73ms from Hong Kong, HK
183.116.186.46 AS4766 Korea Telecom 1.37ms from Incheon, KR
154.120.96.206 AS37340 SPECTRANET LIMITED 14.65ms from Lagos, NG
67.225.161.78 AS32244 Liquid Web, L.L.C 0.17ms from Lansing, US
92.172.133.254 AS12479 Orange Espagne SA 9.92ms from Madrid, ES
132.248.175.126 AS278 Universidad Nacional Autonoma de Mexico 3.73ms from Mexico City, MX
128.116.252.30 AS35612 EOLO S.p.A. 3.75ms from Milan, IT
91.219.161.110 AS16323 Informatsionniye Systemy i Technologii CJSC. 8.61ms from Moscow, RU
67.241.10.158 AS11351 Charter Communications Inc 15.65ms from New York City, US
180.94.43.94 AS131934 ICC Corporation 3.82ms from Osaka, JP
148.60.39.254 AS2200 Renater 6.80ms from Paris, FR
77.143.51.30 AS49902 SOCIETE REUNIONNAISE DU RADIOTELEPHONE SCS 1.84ms from Saint-Denis, RE
119.211.52.254 AS4766 Korea Telecom 1.73ms from Seoul, KR
221.161.55.254 AS4766 Korea Telecom 7.09ms from Seoul, KR
118.61.238.254 AS4766 Korea Telecom 1.81ms from Seoul, KR
220.123.85.158 AS4766 Korea Telecom 4.28ms from Seoul, KR
98.204.15.14 AS7922 Comcast Cable Communications, LLC 9.38ms from Washington, US

Traceroute

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

$
traceroute -a -n -q1 -f3 -m8 55.82.138.242
traceroute to 55.82.138.242 (55.82.138.242): 8 hops max, 52 byte packets
4 *
5 [AS3356] 212.133.1.205 38.537 ms
6 *
7 *
8 *
Measurement taken from IPinfo ProbeNet in Saint Petersburg, RU
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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