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 6 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

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

IP Address ASN Details
2001:480:95:2::f AS4221 United States Department of Defense (DoD) 4.13ms from Chicago, US
2001:480:52:72::5 AS4221 United States Department of Defense (DoD) 0.60ms 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
120.211.117.253 AS24547 Hebei Mobile Communication Company Limited 6.19ms from Beijing, CN
104.137.255.45 AS33363 Charter Communications, Inc 11.79ms from Chicago, US
99.101.41.205 AS7018 AT&T Enterprises, LLC 2.37ms from Dallas, US
75.197.48.141 AS6167 Verizon Business 12.64ms from Morris Plains, US
191.7.28.45 AS52940 VERO S.A 11.61ms from Osasco, BR
57.154.40.125 AS8075 Microsoft Corporation 0.14ms from Phoenix, US
201.123.206.141 AS8151 UNINET 9.51ms from Santiago de Queretaro, MX
218.44.68.141 AS4713 NTT DOCOMO BUSINESS,Inc. 8.29ms from Tokyo, JP
188.21.239.173 AS8447 A1 Telekom Austria AG 0.61ms from Vienna, AT
176.116.203.61 AS57101 WADOWICENET SP Z O O 7.08ms from Warsaw, PL
50.85.206.125 AS8075 Microsoft Corporation 0.24ms from Amsterdam, NL
208.117.60.221 AS11377 SendGrid, Inc. 0.39ms from Ashburn, US
147.213.133.253 AS2607 Zdruzenie pouzivatelov Slovenskej akademickej datovej siete SANET 0.28ms from Bratislava, SK
97.243.35.61 AS6167 Verizon Business 11.73ms from Chicago, US
34.251.192.189 AS16509 Amazon.com, Inc. 0.17ms from Dublin, IE
84.162.82.253 AS3320 Deutsche Telekom AG 3.32ms from Hamburg, DE
211.53.227.125 AS3786 LG DACOM Corporation 4.64ms from Incheon, KR
195.21.42.93 AS3257 GTT Communications Inc. 0.61ms from London, GB
83.20.174.29 AS5617 Orange Polska Spolka Akcyjna 19.25ms from Poznan, PL
139.129.66.157 AS37963 Hangzhou Alibaba Advertising Co.,Ltd. 0.22ms from Qingdao, CN
54.174.161.77 AS14618 Amazon.com, Inc. 0.21ms from Reston, US
185.109.139.253 AS47578 PRT Systems Limited 0.17ms from Singapore, SG
2.70.47.237 AS44034 Hi3G Access AB 6.86ms from Stockholm, SE
89.40.2.45 AS212531 Interneto vizija 0.64ms from Vilnius, LT
5.148.190.173 AS29691 Nine Internet Solutions AG 0.47ms from Zuerich, CH

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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