Autonomous System details

AS331

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

United States
    Stub AS Icon Stub AS

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AS331 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 1
IPv4 addresses 196,608
IPv6 addresses 0
ASN type Government
Registry arin
Allocated 37 years ago on Jun 30, 1989
Updated 6 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
55.19.0.0/16 Headquarters, USAISC 65,536
55.65.0.0/16 Headquarters, USAISC 65,536
55.70.0.0/16 Headquarters, USAISC 65,536
55.19.2.0/24 Headquarters, USAISC 256
55.70.190.0/24 Headquarters, USAISC 256
55.70.214.0/24 Headquarters, USAISC 256

There are no known IPv6 addresses belonging to this network

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IP Ranges API

WHOIS Details

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                                                ASHandle:       AS331
                                                OrgID:          AS331
                                                ASName:         AS331
                                                ASNumber:       AS331
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There is 1 domain name hosted across 1 IP address on this ASN.

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IP Address Domain Domains on this IP
55.65.66.98 ██████████ 1

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Peers

There is 1 peer for this ASN.

Peers Name
AS306 United States Department of Defense (DoD)
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ASN API & Database

Upstreams

There is 1 peer for this ASN.

upstreams Name
AS306 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

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
72.210.71.43 AS22773 Cox Communications Inc. 6.68ms from Atlanta, US
65.52.208.171 AS8075 Microsoft Corporation 0.19ms from Chicago, US
96.69.139.27 AS7922 Comcast Cable Communications, LLC 4.99ms from Denver, US
194.117.10.155 AS1930 Fundacao para a Ciencia e a Tecnologia, I.P. 0.90ms from Lisbon, PT
76.94.84.27 AS20001 Charter Communications Inc 6.92ms from Los Angeles, US
15.156.228.107 AS16509 Amazon.com, Inc. 0.18ms from Montreal, CA
176.211.164.235 AS12389 PJSC Rostelecom 16.57ms from Moscow, RU
117.162.36.11 AS56045 China Mobile communications corporation 12.10ms from Shanghai, CN
113.144.30.59 AS2516 KDDI CORPORATION 4.62ms from Tokyo, JP
104.16.122.59 AS13335 Cloudflare, Inc. 0.10ms from Wrocław, PL
139.130.225.27 AS1221 Telstra Limited 1.93ms from Brisbane, AU
188.36.56.91 AS5483 Magyar Telekom Plc. 4.07ms from Budapest, HU
77.221.239.59 AS42876 Unit IT Services ApS 1.58ms from Copenhagen, DK
45.199.249.203 AS202656 Ivanov Vitaliy Sergeevich 0.17ms from Frankfurt am Main, DE
58.254.178.91 AS136958 China Unicom Guangdong IP network 3.26ms from Guangzhou, CN
31.202.188.235 AS34700 MAXNET TELECOM, LTD 6.52ms from Kharkiv, UA
60.50.2.59 AS4788 TM TECHNOLOGY SERVICES SDN. BHD. 6.33ms from Kuala Lumpur, MY
85.42.17.107 AS3269 Telecom Italia S.p.A. 0.34ms from Milan, IT
58.218.19.91 AS4134 CHINANET-BACKBONE 9.18ms from Nanjing, CN
63.125.92.171 AS701 Verizon Business 9.83ms from New York City, US
126.207.176.107 AS17676 SoftBank Corp. 3.33ms from Osaka, JP
45.188.57.251 AS269825 UNIVERSIDAD DE LAS AMERICAS 0.72ms from Quito, EC
69.153.21.43 AS7018 AT&T Enterprises, LLC 4.10ms from San Antonio, US
14.83.155.139 AS4766 Korea Telecom 1.42ms from Seoul, KR
70.97.188.91 AS23465 Nuvera 8.41ms from Sioux Falls, US

Traceroute

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

$
traceroute -a -n -q1 -f2 -m6 55.65.197.4
traceroute to 55.65.197.4 (55.65.197.4): 6 hops max, 52 byte packets
2 [AS58061] 38.180.36.1 0.254 ms
4 *
5 *
6 *
Measurement taken from IPinfo ProbeNet in Almaty, 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 AS331 at robtex.

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