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 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

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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
214.54.218.84 AS121 United States Department of Defense (DoD) 1.75ms from Los Angeles, US
214.54.201.63 AS121 United States Department of Defense (DoD) 2.73ms from Ashburn, US
214.54.223.45 AS121 United States Department of Defense (DoD) 1.78ms from Los Angeles, US
214.54.202.150 AS121 United States Department of Defense (DoD) 2.69ms from Ashburn, US
214.54.192.174 AS121 United States Department of Defense (DoD) 2.71ms from Ashburn, US
214.54.212.21 AS121 United States Department of Defense (DoD) 1.79ms from Los Angeles, US
214.54.193.255 AS121 United States Department of Defense (DoD) 2.69ms from Ashburn, US
214.54.196.224 AS121 United States Department of Defense (DoD) 2.71ms from Ashburn, US
214.54.209.219 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.221.73 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.203.103 AS121 United States Department of Defense (DoD) 2.68ms from Ashburn, US
214.54.222.37 AS121 United States Department of Defense (DoD) 1.81ms from Los Angeles, US
214.54.215.23 AS121 United States Department of Defense (DoD) 1.76ms from Los Angeles, US
214.54.205.29 AS121 United States Department of Defense (DoD) 2.70ms from Ashburn, US
214.54.213.214 AS121 United States Department of Defense (DoD) 1.75ms from Los Angeles, US
214.54.227.172 AS121 United States Department of Defense (DoD) 2.69ms from Ashburn, US
214.54.207.241 AS121 United States Department of Defense (DoD) 2.70ms from Ashburn, US
214.54.208.36 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.194.82 AS121 United States Department of Defense (DoD) 2.72ms from Ashburn, US
214.54.214.112 AS121 United States Department of Defense (DoD) 1.77ms from Los Angeles, US
214.54.224.8 AS121 United States Department of Defense (DoD) 0.62ms from Honolulu, US
214.54.198.70 AS121 United States Department of Defense (DoD) 2.65ms from Ashburn, US
214.54.199.10 AS121 United States Department of Defense (DoD) 2.71ms from Ashburn, US
214.54.211.126 AS121 United States Department of Defense (DoD) 1.74ms from Los Angeles, US
214.54.226.105 AS121 United States Department of Defense (DoD) 2.65ms 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
119.46.143.153 AS7470 TRUE INTERNET Co.,Ltd. 2.48ms from Bangkok, TH
87.116.156.217 AS31042 Serbia BroadBand-Srpske Kablovske mreze d.o.o. 1.16ms from Belgrade, RS
156.214.233.73 AS8452 TE-AS 8.48ms from Cairo, EG
116.169.224.137 AS4837 CHINA UNICOM China169 Backbone 7.09ms from Chengdu, CN
209.242.126.9 AS62 CyrusOne LLC 19.01ms from Chicago, US
198.252.102.169 AS20068 Hawk Host Inc. 0.34ms from Dallas, US
1.6.155.9 AS9583 Sify Limited 10.67ms from Delhi, IN
2.205.3.41 AS3209 Vodafone GmbH 6.27ms from Duesseldorf, DE
129.233.231.233 AS680 Verein zur Foerderung eines Deutschen Forschungsnetzes e.V. 3.82ms from Frankfurt am Main, DE
175.44.14.153 AS4837 CHINA UNICOM China169 Backbone 6.98ms from Fuzhou, CN
202.86.142.41 AS4609 Companhia de Telecomunicacoes de Macau SARL 1.71ms from Hong Kong, HK
175.143.217.121 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 2.79ms from Kuala Lumpur, MY
81.131.40.169 AS2856 British Telecommunications PLC 1.37ms from London, GB
109.71.80.41 AS50202 Hiscox Underwriting Group Services Ltd 2.63ms from London, GB
80.14.138.9 AS3215 Orange S.A. 2.56ms from Paris, FR
176.133.53.249 AS5410 Bouygues Telecom SA 4.91ms from Paris, FR
98.6.233.89 AS11427 Charter Communications Inc 1.99ms from Schertz, US
119.200.211.201 AS4766 Korea Telecom 6.73ms from Seoul, KR
186.200.2.233 AS10429 TELEFÔNICA BRASIL S.A 0.74ms from São Paulo, BR
45.115.34.57 AS395793 Arisk Communications inc. 0.46ms from Tokyo, JP
138.2.247.9 AS31898 Oracle Corporation 0.14ms from Vinhedo, BR
176.180.248.137 AS5410 Bouygues Telecom SA 16.99ms from Aubervilliers, FR
94.224.84.249 AS6848 Telenet BV 6.12ms from Brussels, BE
75.240.40.41 AS6167 Verizon Business 18.91ms from Chicago, US
4.2.156.249 AS3356 Level 3 Parent, LLC 0.89ms from Cincinnati, US

Traceroute

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

$
traceroute -a -n -q1 -f4 214.54.214.91
traceroute to 214.54.214.91 (214.54.214.91): 64 hops max, 52 byte packets
4 [AS6939] 184.105.81.68 0.738 ms
6 [AS121] 214.54.214.91 1.855 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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