Autonomous System details

AS138

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

United States
    Stub AS Icon Stub AS

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AS138 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 0
IPv4 addresses 236,288
IPv6 addresses 0
ASN type Government
Registry arin
Allocated 38 years ago on Nov 11, 1987
Updated 5 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
131.66.0.0/16 DoD Network Information Center 65,536
131.67.0.0/16 DoD Network Information Center 65,536
131.68.0.0/16 DoD Network Information Center 65,536
141.234.0.0/18 DoD Network Information Center 16,384
141.234.64.0/18 DoD Network Information Center 16,384
144.183.200.0/21 DoD Network Information Center 2,048
144.183.32.0/22 DoD Network Information Center 1,024
144.183.196.0/22 DoD Network Information Center 1,024
144.183.128.0/23 DoD Network Information Center 512
144.183.15.0/24 DoD Network Information Center 256
144.183.16.0/24 DoD Network Information Center 256
144.183.17.0/24 DoD Network Information Center 256
144.183.20.0/24 DoD Network Information Center 256
144.183.127.0/24 DoD Network Information Center 256
144.183.130.0/24 DoD Network Information Center 256
144.183.131.0/24 DoD Network Information Center 256
144.183.216.0/24 DoD Network Information Center 256
144.183.227.0/24 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:       AS138
                                                OrgID:          AS138
                                                ASName:         AS138
                                                ASNumber:       AS138
                                                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
AS27064 United States Department of Defense (DoD)
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS27064 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

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

IP Address ASN Details
144.183.130.117 AS138 United States Department of Defense (DoD) 10.10ms from Dallas, US
144.183.15.21 AS138 United States Department of Defense (DoD) 9.42ms from Chicago, US
144.183.129.10 AS138 United States Department of Defense (DoD) 10.94ms from Chicago, 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
64.78.25.106 AS16406 Intermedia.net, Inc. 1.12ms from Ashburn, US
212.218.13.170 AS8319 NETHINKS GmbH 0.52ms from Frankfurt am Main, DE
14.230.22.202 AS45899 VNPT Corp 4.47ms from Ho Chi Minh City, VN
216.215.122.10 AS25956 Logix 1.76ms from Houston, US
172.88.202.106 AS20001 Charter Communications Inc 5.60ms from Los Angeles, US
189.125.94.250 AS3549 Level 3 Parent, LLC 0.60ms from Osasco, BR
68.167.136.122 AS212238 Datacamp Limited 0.09ms from Santiago de Queretaro, MX
96.118.250.154 AS7922 Comcast Cable Communications, LLC 3.85ms from Seattle, US
118.44.215.26 AS4766 Korea Telecom 3.33ms from Seoul, KR
182.31.176.154 AS9694 Seokyung Cable Television Co.. Ltd. 7.72ms from Seoul, KR
31.125.56.106 AS6871 Plusnet 4.27ms from London, GB
3.235.224.186 AS14618 Amazon.com, Inc. 0.38ms from Reston, US
189.110.67.202 AS27699 TELEFÔNICA BRASIL S.A 2.81ms from Sao Paulo, BR
133.238.89.58 AS131958 Tama Cable Network Co.,Ltd. 9.62ms from Tokyo, JP
154.249.157.218 AS36947 Telecom Algeria 11.55ms from Algiers, DZ
80.112.245.106 AS33915 Vodafone Libertel B.V. 2.60ms from Amsterdam, NL
197.50.241.90 AS8452 TE-AS 5.45ms from Cairo, EG
181.93.114.10 AS7303 Telecom Argentina S.A. 10.18ms from Cordoba, AR
187.87.35.154 AS53073 GD SERVIÇOS INTERNET LTDA 18.71ms from Fortaleza, BR
99.182.32.10 AS7018 AT&T Enterprises, LLC 1.70ms from Houston, US
81.79.188.170 AS5378 Vodafone Limited 5.59ms from London, GB
51.95.24.58 AS16509 Amazon.com, Inc. 6.89ms from Madrid, ES
66.231.254.42 AS22364 Telefonica Global Solutions USA, INC 0.82ms from Miami, US
217.169.112.10 AS20746 Telecom Italia S.p.A. 1.51ms from Milan, IT
62.153.139.154 AS3320 Deutsche Telekom AG 0.84ms from Nuernberg, DE

Traceroute

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

$
traceroute -a -n -q1 -m5 131.68.101.190
traceroute to 131.68.101.190 (131.68.101.190): 5 hops max, 52 byte packets
1 [AS208450] 45.136.59.1 2.032 ms
3 *
4 *
5 *
Measurement taken from IPinfo ProbeNet in Aktau, KZ
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 AS138 at robtex.

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