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 39 years ago on Aug 13, 1987
Updated 7 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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ASN API & Database

Pingable IPs

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

IP Address ASN Details
214.54.224.255 AS121 United States Department of Defense (DoD) 0.64ms from Honolulu, US
214.54.222.83 AS121 United States Department of Defense (DoD) 1.73ms from Los Angeles, US
214.54.208.207 AS121 United States Department of Defense (DoD) 1.73ms from Los Angeles, US
214.54.221.30 AS121 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
214.54.196.211 AS121 United States Department of Defense (DoD) 0.28ms from Ashburn, US
214.54.216.254 AS121 United States Department of Defense (DoD) 1.73ms from Los Angeles, US
214.54.203.54 AS121 United States Department of Defense (DoD) 0.29ms from Ashburn, US
214.54.231.187 AS121 United States Department of Defense (DoD) 1.70ms from Los Angeles, US
214.54.223.239 AS121 United States Department of Defense (DoD) 1.73ms from Los Angeles, US
214.54.195.8 AS121 United States Department of Defense (DoD) 0.35ms from Ashburn, US
214.54.218.14 AS121 United States Department of Defense (DoD) 1.68ms from Los Angeles, US
214.54.192.156 AS121 United States Department of Defense (DoD) 0.32ms from Ashburn, US
214.54.212.119 AS121 United States Department of Defense (DoD) 1.72ms from Los Angeles, US
214.54.214.238 AS121 United States Department of Defense (DoD) 1.70ms from Los Angeles, US
214.54.219.191 AS121 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
214.54.207.54 AS121 United States Department of Defense (DoD) 0.28ms from Ashburn, US
214.54.215.200 AS121 United States Department of Defense (DoD) 1.73ms from Los Angeles, US
214.54.213.226 AS121 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
214.54.209.191 AS121 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
214.54.200.185 AS121 United States Department of Defense (DoD) 0.37ms from Ashburn, US
214.54.227.117 AS121 United States Department of Defense (DoD) 0.33ms from Ashburn, US
214.54.226.57 AS121 United States Department of Defense (DoD) 0.37ms from Ashburn, US
214.54.220.49 AS121 United States Department of Defense (DoD) 1.71ms from Los Angeles, US
214.54.202.206 AS121 United States Department of Defense (DoD) 0.32ms from Ashburn, US
214.54.199.100 AS121 United States Department of Defense (DoD) 0.31ms 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
108.31.231.41 AS701 Verizon Business 1.99ms from Ashburn, US
103.105.21.217 AS137495 Skyline Networks NZ Ltd 0.18ms from Auckland, NZ
183.175.42.41 AS4538 China Education and Research Network Center 12.12ms from Beijing, CN
87.116.156.217 AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o. 1.12ms from Belgrade, RS
34.221.239.137 AS16509 Amazon.com, Inc. 0.26ms from Boardman, US
94.105.119.73 AS9031 EDPNETapp 1.68ms from Brussels, BE
69.128.53.41 AS4181 TDS TELECOM 4.30ms from Chicago, US
75.62.22.57 AS7018 AT&T Enterprises, LLC 17.31ms from Dallas, US
175.29.182.185 AS17469 Access Telecom (BD) Ltd. 0.64ms from Dhaka, BD
63.33.167.73 AS16509 Amazon.com, Inc. 0.16ms from Dublin, IE
51.183.35.57 AS5607 Sky UK Limited 1.16ms from Dublin, IE
109.255.163.169 AS6830 Liberty Global Europe Holding B.V. 4.44ms from Dublin, IE
49.51.133.153 AS132203 Tencent Building, Kejizhongyi Avenue 0.32ms from Frankfurt am Main, DE
65.141.1.249 AS209 CenturyLink Communications, LLC 1.63ms from Houston, US
66.45.135.185 AS11232 Midcontinent Communications 14.88ms from Minneapolis, US
24.30.237.185 AS12271 Charter Communications Inc 1.89ms from New York City, US
63.118.47.233 AS701 Verizon Business 1.37ms from New York City, US
204.43.0.9 AS62600 Arizona Board of Regents 1.14ms from Phoenix, US
112.240.90.249 AS4837 CHINA UNICOM China169 Backbone 5.43ms from Qingdao, CN
179.174.215.153 AS26599 TELEFÔNICA BRASIL S.A 17.20ms from Rio de Janeiro, BR
92.222.106.121 AS16276 OVH SAS 0.10ms from Roubaix, FR
80.72.55.169 AS20634 Telecom Liechtenstein AG 0.42ms from Schaan, LI
60.191.155.105 AS4134 CHINANET-BACKBONE 11.41ms from Shanghai, CN
24.212.130.25 AS5645 TekSavvy Solutions, Inc. 0.21ms from Toronto, CA
89.174.96.57 AS12912 T-Mobile Polska S.A. 1.25ms from Warsaw, PL

Traceroute

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

$
traceroute -a -n -q1 -f2 214.54.224.179
traceroute to 214.54.224.179 (214.54.224.179): 64 hops max, 52 byte packets
2 [AS50837] 208.111.57.3 0.143 ms
4 [AS121] 214.54.224.179 0.755 ms
Measurement taken from IPinfo ProbeNet in Honolulu, 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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