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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ASN API & Database

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) 60.62ms from Hamilton, BM
144.183.15.21 AS138 United States Department of Defense (DoD) 47.40ms from Hamilton, BM
144.183.129.10 AS138 United States Department of Defense (DoD) 24.55ms from Louisville, 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
174.57.74.58 AS7922 Comcast Cable Communications, LLC 8.57ms from Ashburn, US
212.23.128.250 AS12329 GLASFASER RUHR GmbH & Co. KG 0.58ms from Duesseldorf, DE
116.101.54.122 AS7552 Viettel Group 0.82ms from Hanoi, VN
50.79.242.42 AS7922 Comcast Cable Communications, LLC 8.80ms from Houston, US
60.169.45.74 AS4134 CHINANET-BACKBONE 6.57ms from Huai'an, CN
219.254.131.154 AS9318 SK Broadband Co Ltd 5.00ms from Incheon, KR
136.26.136.10 AS19165 Webpass Inc. 3.83ms from Los Angeles, US
78.112.184.154 AS15557 Societe Francaise Du Radiotelephone - SFR SA 13.71ms from Lyon, FR
189.206.218.90 AS11172 Alestra, S. de R.L. de C.V. 1.82ms from Mexico City, MX
131.212.43.202 AS217 University of Minnesota 4.50ms from Minneapolis, US
207.145.248.218 AS3257 GTT Communications Inc. 0.27ms from New York City, US
220.185.72.26 AS4134 CHINANET-BACKBONE 5.21ms from Ningbo, CN
3.90.0.250 AS14618 Amazon.com, Inc. 0.44ms from Reston, US
12.5.61.250 AS7018 AT&T Enterprises, LLC 3.14ms from San Antonio, US
216.215.4.218 AS19800 Grant County Public Utility District 11.68ms from Seattle, US
221.168.138.26 AS4766 Korea Telecom 1.45ms from Seoul, KR
219.249.5.90 AS9318 SK Broadband Co Ltd 5.45ms from Seoul, KR
20.43.30.90 AS8075 Microsoft Corporation 0.19ms from Toronto, CA
195.66.68.234 AS39085 Torunski Zaklady Materialow Opatrunkowych S.A. 4.13ms from Warsaw, PL
24.131.241.42 AS7922 Comcast Cable Communications, LLC 12.50ms from Ashburn, US
96.27.148.42 AS12083 WideOpenWest Finance LLC 6.69ms from Atlanta, US
178.41.229.90 AS6855 Slovak Telekom, a.s. 1.76ms from Bratislava, SK
78.98.96.186 AS6855 Slovak Telekom, a.s. 6.91ms from Bratislava, SK
192.210.203.138 AS36352 HostPapa 0.32ms from Chicago, US
27.10.77.234 AS4837 CHINA UNICOM China169 Backbone 1.65ms from Chongqing, CN

Traceroute

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

$
traceroute -a -n -q1 -f3 -m7 131.67.64.165
traceroute to 131.67.64.165 (131.67.64.165): 7 hops max, 52 byte packets
3 [AS6762] 79.140.91.0 1.691 ms
4 [AS6762] 195.22.212.149 32.777 ms
5 *
6 *
7 *
Measurement taken from IPinfo ProbeNet in Athens, GR
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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