Autonomous System details

AS121

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

United States
    Stub AS Icon Stub AS

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AS121 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 0
IPv4 addresses 9,728
IPv6 addresses 0
ASN type Government
Registry arin
Allocated 38 years ago on Aug 13, 1987
Updated 3 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
214.54.192.0/20 DoD Network Information Center 4,096
214.54.208.0/20 DoD Network Information Center 4,096
214.54.224.0/23 DoD Network Information Center 512
214.54.226.0/23 DoD Network Information Center 512
214.54.230.0/24 DoD Network Information Center 256
214.54.231.0/24 DoD Network Information Center 256

There are no known IPv6 addresses belonging to this network

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WHOIS Details

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                                                ASHandle:       AS121
                                                OrgID:          AS121
                                                ASName:         AS121
                                                ASNumber:       AS121
                                                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

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

IP Address ASN Details
214.54.216.41 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.221.22 AS121 United States Department of Defense (DoD) 1.80ms from Los Angeles, US
214.54.213.35 AS121 United States Department of Defense (DoD) 1.80ms from Los Angeles, US
214.54.223.82 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.214.99 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.224.195 AS121 United States Department of Defense (DoD) 0.63ms from Honolulu, US
214.54.210.99 AS121 United States Department of Defense (DoD) 1.81ms from Los Angeles, US
214.54.231.11 AS121 United States Department of Defense (DoD) 1.81ms from Los Angeles, US
214.54.220.66 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.212.125 AS121 United States Department of Defense (DoD) 1.76ms from Los Angeles, US
214.54.217.82 AS121 United States Department of Defense (DoD) 1.80ms from Los Angeles, US
214.54.218.103 AS121 United States Department of Defense (DoD) 1.80ms from Los Angeles, US
214.54.209.89 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.219.191 AS121 United States Department of Defense (DoD) 1.81ms from Los Angeles, US
214.54.215.24 AS121 United States Department of Defense (DoD) 1.81ms from Los Angeles, US
214.54.222.200 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.208.11 AS121 United States Department of Defense (DoD) 1.82ms from Los Angeles, US
214.54.225.177 AS121 United States Department of Defense (DoD) 0.62ms from Honolulu, US
214.54.211.139 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, 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
61.49.72.249 AS4808 China Unicom Beijing Province Network 3.87ms from Beijing, CN
34.213.100.9 AS16509 Amazon.com, Inc. 0.18ms from Boardman, US
143.59.240.169 AS12083 WideOpenWest Finance LLC 7.15ms from Chicago, US
18.222.82.249 AS16509 Amazon.com, Inc. 0.18ms from Columbus, US
3.249.234.105 AS16509 Amazon.com, Inc. 0.48ms from Dublin, IE
187.19.216.249 AS28126 BRISANET SERVICOS DE TELECOMUNICACOES S.A 2.72ms from Fortaleza, BR
213.208.6.89 AS702 Verizon Business 0.52ms from Frankfurt am Main, DE
117.161.95.233 AS9808 China Mobile Communications Group Co., Ltd. 1.79ms from Hohhot, CN
39.40.184.153 AS17557 Pakistan Telecommunication Company Limited 12.32ms from Islamabad, PK
220.164.135.137 AS4134 CHINANET-BACKBONE 9.17ms from Kunming, CN
34.94.134.89 AS396982 Google LLC 0.10ms from Los Angeles, US
23.90.23.25 AS62904 Eonix Corporation 0.60ms from Los Angeles, US
120.203.1.137 AS56045 China Mobile communications corporation 1.87ms from Nanchang, CN
24.97.195.25 AS11351 Charter Communications Inc 9.55ms from New York City, US
187.50.15.89 AS10429 TELEFÔNICA BRASIL S.A 1.94ms from Osasco, BR
45.141.175.25 AS41653 Aqua Ray SAS 0.68ms from Paris, FR
107.22.219.153 AS14618 Amazon.com, Inc. 0.19ms from Reston, US
12.27.93.249 AS7018 AT&T Enterprises, LLC 3.12ms from San Antonio, US
190.99.82.25 AS212238 Datacamp Limited 0.10ms from Santiago de Queretaro, MX
118.63.233.217 AS4766 Korea Telecom 1.26ms from Seoul, KR
110.8.47.41 AS9318 SK Broadband Co Ltd 7.11ms from Seoul, KR
218.49.22.137 AS9318 SK Broadband Co Ltd 1.86ms from Seoul, KR
37.157.171.201 AS8866 Vivacom Bulgaria EAD 0.72ms from Sofia, BG
157.147.247.185 AS2527 Sony Network Communications Inc. 2.00ms from Tokyo, JP
194.166.200.41 AS8447 A1 Telekom Austria AG 11.68ms from Vienna, AT

Traceroute

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

$
traceroute -a -n -q1 -f5 214.54.214.209
traceroute to 214.54.214.209 (214.54.214.209): 64 hops max, 52 byte packets
5 [AS121] 214.54.214.209 2.021 ms
Measurement taken from IPinfo ProbeNet in Los Angeles, 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 AS121 at robtex.

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