Autonomous System details

AS121

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

United States
    Stub AS Icon Stub AS

Need more data or want to access it via API or data downloads? Sign up to get free access

Sign up for free ›

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 5 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

Get this data and more with IPinfo's powerful IP Ranges API - quickly and easily identify company-owned IP ranges.
IP Ranges API

WHOIS Details

Join for free to view WHOIS details › 

                                                ASHandle:       AS121
                                                OrgID:          AS121
                                                ASName:         AS121
                                                ASNumber:       AS121
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
Get this data and more with IPinfo's WHOIS product - effortless access to POCs, ORGs, and Networks, for actionable intelligence.
IP WHOIS API & Database

Hosted Domains

There are no domains currently hosted on this ASN.

Discover all domains hosted on a single IP address with IPinfo's powerful Hosted Domains (Reverse IP) solution.
Useful for Cybersecurity
Hosted Domains API & Database

Peers

There is 1 peer for this ASN.

Peers Name
AS668 United States Department of Defense (DoD)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS668 United States Department of Defense (DoD)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
ASN API & Database

Downstreams

There are no downstreams for this ASN.

Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.
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
214.54.209.223 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.200.174 AS121 United States Department of Defense (DoD) 2.66ms from Ashburn, US
214.54.192.19 AS121 United States Department of Defense (DoD) 2.67ms from Ashburn, US
214.54.214.140 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.207.101 AS121 United States Department of Defense (DoD) 2.69ms from Ashburn, US
214.54.197.192 AS121 United States Department of Defense (DoD) 2.68ms from Ashburn, US
214.54.225.8 AS121 United States Department of Defense (DoD) 0.62ms from Honolulu, US
214.54.231.67 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.230.191 AS121 United States Department of Defense (DoD) 2.66ms from Ashburn, US
214.54.199.84 AS121 United States Department of Defense (DoD) 2.63ms from Ashburn, US
214.54.224.254 AS121 United States Department of Defense (DoD) 0.63ms from Honolulu, US
214.54.201.30 AS121 United States Department of Defense (DoD) 2.68ms from Ashburn, US
214.54.208.157 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.220.31 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.219.22 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.216.189 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.226.105 AS121 United States Department of Defense (DoD) 2.66ms from Ashburn, US
214.54.223.131 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.195.22 AS121 United States Department of Defense (DoD) 2.65ms from Ashburn, US
214.54.193.21 AS121 United States Department of Defense (DoD) 2.71ms from Ashburn, US
214.54.215.252 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.204.26 AS121 United States Department of Defense (DoD) 2.69ms from Ashburn, US
214.54.198.64 AS121 United States Department of Defense (DoD) 2.66ms from Ashburn, US
214.54.211.236 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.222.171 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
76.223.106.41 AS16509 Amazon.com, Inc. 0.04ms from Bangkok, TH
139.13.98.41 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 10.42ms from Berlin, DE
78.99.192.57 AS6855 Slovak Telekom, a.s. 1.51ms from Bratislava, SK
213.49.163.121 AS5432 Proximus NV 3.48ms from Brussels, BE
89.187.205.185 AS21413 Envia Tel GmbH 2.15ms from Falkenstein, DE
187.44.145.25 AS28186 ITS TELECOMUNICACOES LTDA 17.96ms from Fortaleza, BR
49.51.133.153 AS132203 Tencent Building, Kejizhongyi Avenue 0.34ms from Frankfurt am Main, DE
111.57.14.9 AS9808 China Mobile Communications Group Co., Ltd. 3.75ms from Hohhot, CN
98.211.175.57 AS7922 Comcast Cable Communications, LLC 4.68ms from Miami, US
71.226.25.249 AS7922 Comcast Cable Communications, LLC 9.69ms from Miami, US
156.54.138.153 AS20746 Telecom Italia S.p.A. 1.65ms from Milan, IT
78.7.189.137 AS8968 BT Italia S.p.A. 1.19ms from Milan, IT
93.125.105.153 AS31143 COSMOS TV JLLC 1.14ms from Minsk, BY
109.254.146.57 AS20590 Donbass Electronic Communications Ltd. 17.20ms from Moscow, RU
166.145.154.121 AS6167 Verizon Business 18.79ms from New York City, US
170.79.140.217 AS266308 i9NET - PROVEDOR DE INTERNET LTDA - ME 0.97ms from Novo Hamburgo, BR
219.146.84.57 AS4134 CHINANET-BACKBONE 1.66ms from Qingdao, CN
2.114.56.249 AS3269 Telecom Italia S.p.A. 1.67ms from Rome, IT
89.35.211.121 AS44407 Linkt SAS 0.53ms from Saint-Denis, FR
194.165.143.169 AS8376 Jordan Data Communications Company LLC 0.54ms from Amman, JO
66.31.165.9 AS7922 Comcast Cable Communications, LLC 5.08ms from Boston, US
140.141.231.169 AS12119 ITV-3 5.10ms from Chicago, US
192.12.32.25 AS9 Carnegie Mellon University 4.64ms from Cleveland, US
12.69.162.73 AS7018 AT&T Enterprises, LLC 1.24ms from Dallas, US
75.62.22.57 AS7018 AT&T Enterprises, LLC 17.39ms from Dallas, US

Traceroute

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

$
traceroute -a -n -q1 -f6 214.54.197.7
traceroute to 214.54.197.7 (214.54.197.7): 64 hops max, 52 byte packets
6 [AS121] 214.54.197.7 3.039 ms
Measurement taken from IPinfo ProbeNet in Ashburn, 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.

Data built with users in mind: reliable, accurate, and easy-to-use

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

Get Started for Free Contact Sales
IPinfo for all your IP geolocation needs

Our IP tools

Explore all tools
What is my IP

What is my IP

Test our data accuracy by viewing insights from your IP address.

See your IP address
Map IPs

Map IPs

Paste up to 500,000 IPs to see where they're located on a map.

Try Map IPs
Summarize IPs

Summarize IPs

Use our data visualization tool to create a visual overview of multiple IPs.

Try Summarize IPs