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 8 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

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
84.116.7.9 AS6830 Liberty Global Europe Holding B.V. 0.87ms from Amsterdam, NL
65.126.170.25 AS209 CenturyLink Communications, LLC 0.53ms from Atlanta, US
75.225.130.41 AS6167 Verizon Business 17.58ms from Atlanta, US
62.48.183.153 AS15525 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. 0.70ms from Braga, PT
12.237.240.57 AS7018 AT&T Enterprises, LLC 8.98ms from Fremont, US
119.41.17.89 AS4134 CHINANET BACKBONE 3.88ms from Haikou, CN
65.181.74.121 AS4760 HKT Limited 9.08ms from Hong Kong, HK
91.213.133.249 AS31424 Netrics AG 1.39ms from Kloten, CH
106.208.248.249 AS45609 Bharti Airtel Ltd. AS for GPRS Service 6.69ms from Kolkata, IN
193.251.148.9 AS5511 Orange S.A. 0.16ms from Madrid, ES
217.220.141.233 AS8968 BT Italia S.p.A. 1.14ms from Milan, IT
94.181.155.121 AS41754 JSC ER-Telecom Holding 11.03ms from Moscow, RU
91.231.135.89 AS47764 LLC VK 5.03ms from Moscow, RU
71.40.181.9 AS33363 Charter Communications, Inc 2.01ms from Orlando, US
126.23.53.9 AS17676 SoftBank Corp. 7.20ms from Osaka, JP
221.155.145.185 AS4766 Korea Telecom 1.58ms from Seoul, KR
121.178.45.57 AS4766 Korea Telecom 5.28ms from Seoul, KR
154.196.132.9 AS141389 GOIP Telecom (Asia Pacific) Pte. Ltd. 0.34ms from Singapore, SG
77.29.171.169 AS6821 Makedonski Telekom AD-Skopje 5.52ms from Sofia, BG
61.68.130.217 AS7545 TPG Telecom Limited 1.13ms from Sydney, AU
63.158.81.89 AS209 CenturyLink Communications, LLC 0.82ms from Ashburn, US
182.75.201.153 AS9498 BHARTI Airtel Ltd. 1.04ms from Bengaluru, IN
216.40.0.25 AS53828 NETWORK INNOVATIONS, LLC 0.19ms from Chicago, US
13.89.53.41 AS8075 Microsoft Corporation 0.40ms from Des Moines, US
213.95.223.105 AS12337 noris network AG 2.90ms from Frankfurt am Main, DE

Traceroute

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

$
traceroute -a -n -q1 -f5 214.54.193.239
traceroute to 214.54.193.239 (214.54.193.239): 64 hops max, 52 byte packets
5 [AS121] 214.54.193.239 0.551 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.

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