Autonomous System details

AS4221

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

United States
    Stub AS Icon Stub AS

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AS4221 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 0
IPv4 addresses 0
IPv6 addresses 2,417,851,639,229,258,349,412,352
ASN type Government
Registry arin
Allocated 31 years ago on Jan 09, 1995
Updated 5 months ago on Sep 12, 2025

IP Ranges

There are no known IPv4 addresses belonging to this network

Netblock Company
2001:480:52::/48 High Performance Computing
2001:480:95::/48 High Performance Computing
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WHOIS Details

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                                                ASHandle:       AS4221
                                                OrgID:          AS4221
                                                ASName:         AS4221
                                                ASNumber:       AS4221
                                                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 is 1 peer for this ASN.

Peers Name
AS668 United States Department of Defense (DoD)
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Upstreams

There is 1 peer for this ASN.

upstreams Name
AS668 United States Department of Defense (DoD)
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Downstreams

There are no downstreams for this ASN.

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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
72.165.200.29 AS209 CenturyLink Communications, LLC 1.06ms from Ashburn, US
170.124.82.45 AS7029 Windstream Communications LLC 1.05ms from Ashburn, US
117.205.254.45 AS9829 National Internet Backbone 18.52ms from Bengaluru, IN
80.201.211.189 AS5432 Proximus NV 3.30ms from Brussels, BE
14.195.14.93 AS45820 Tata Teleservices ISP AS 0.52ms from Hyderabad, IN
168.149.105.189 AS25019 Saudi Telecom Company JSC 1.33ms from Jeddah, SA
60.217.38.221 AS4837 CHINA UNICOM China169 Backbone 9.16ms from Jinan, CN
109.157.72.93 AS2856 British Telecommunications PLC 4.42ms from London, GB
213.104.44.205 AS5089 Virgin Media Limited 17.04ms from London, GB
76.87.250.173 AS20001 Charter Communications Inc 2.22ms from Los Angeles, US
72.132.54.93 AS20001 Charter Communications Inc 7.54ms from Los Angeles, US
83.37.79.237 AS3352 TELEFONICA DE ESPANA S.A.U. 12.44ms from Madrid, ES
82.58.200.221 AS3269 Telecom Italia S.p.A. 3.98ms from Milan, IT
110.73.220.13 AS4837 CHINA UNICOM China169 Backbone 6.83ms from Nanning, CN
174.116.25.61 AS812 Rogers Communications Canada Inc. 6.09ms from Ottawa, CA
68.227.143.253 AS22773 Cox Communications Inc. 16.63ms from Richardson, US
23.70.41.237 AS7922 Comcast Cable Communications, LLC 11.09ms from Salt Lake City, US
107.162.176.221 AS55002 F5, Inc. 0.27ms from Seattle, US
13.51.70.157 AS16509 Amazon.com, Inc. 1.10ms from Stockholm, SE
95.197.187.237 AS3301 Telia Company AB 15.58ms from Stockholm, SE
1.123.140.237 AS1221 Telstra Limited 2.56ms from Sydney, AU
85.125.190.221 AS8412 T-Mobile Austria GmbH 6.38ms from Vienna, AT
93.136.157.45 AS5391 Hrvatski Telekom d.d. 10.09ms from Zagreb, HR
76.28.3.29 AS7922 Comcast Cable Communications, LLC 8.58ms from Boston, US
65.31.131.29 AS10796 Charter Communications Inc 4.42ms from Chicago, US

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 AS4221 at robtex.

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