AS number details

AS668

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

United States

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AS668 – United States Department of Defense (DoD)

Field Value
Country United States
Website mail.mil
Hosted domains 23
Number of IPv4 2,666,752
Number of IPv6 79,228,162,514,264,337,593,543,950,336
ASN type Government
Registry arin
Allocated 36 years ago on Apr 24, 1990
Updated 2 months ago on Sep 12, 2025

IP Ranges

Netblock Company Num of IPs
6.14.0.0/15 Headquarters, USAISC 131,072
6.4.0.0/16 Headquarters, USAISC 65,536
6.11.0.0/16 Headquarters, USAISC 65,536
128.132.0.0/16 Air Force Systems Networking 65,536
129.92.0.0/16 Air Force Systems Networking 65,536
129.229.0.0/16 Headquarters, USAISC 65,536
130.109.0.0/16 Navy Network Information Center (NNIC) 65,536
130.163.0.0/16 Navy Network Information Center (NNIC) 65,536
131.120.0.0/16 Navy Network Information Center (NNIC) 65,536
131.121.0.0/16 Navy Network Information Center (NNIC) 65,536
131.122.0.0/16 Navy Network Information Center (NNIC) 65,536
131.214.0.0/16 Air Force Systems Networking 65,536
131.218.0.0/16 Headquarters, USAISC 65,536
132.45.0.0/16 Air Force Systems Networking 65,536
132.193.0.0/16 Headquarters, USAISC 65,536
137.128.0.0/16 Headquarters, USAISC 65,536
140.6.0.0/16 DoD Network Information Center 65,536
140.25.0.0/16 DoD Network Information Center 65,536
140.31.0.0/16 DoD Network Information Center 65,536
140.32.0.0/16 DoD Network Information Center 65,536
140.178.0.0/16 Navy Network Information Center (NNIC) 65,536
143.56.0.0/16 DoD Network Information Center 65,536
144.3.0.0/16 Headquarters, USAISC 65,536
147.227.0.0/16 Headquarters, USAISC 65,536
150.125.0.0/16 Navy Network Information Center (NNIC) 65,536
155.141.0.0/16 Headquarters, USAISC 65,536
155.244.0.0/16 Air Force Systems Networking 65,536
157.187.0.0/16 Navy Network Information Center (NNIC) 65,536
158.12.0.0/16 Headquarters, USAISC 65,536
163.240.0.0/16 Navy Network Information Center (NNIC) 65,536
164.49.0.0/16 Headquarters, USAISC 65,536
164.191.0.0/16 Navy Network Information Center (NNIC) 65,536
6.2.0.0/17 Headquarters, USAISC 32,768
6.6.128.0/17 Headquarters, USAISC 32,768
128.160.0.0/17 Navy Network Information Center (NNIC) 32,768
131.250.0.0/17 Navy Network Information Center (NNIC) 32,768
155.148.0.0/17 Headquarters, USAISC 32,768
6.3.0.0/18 Headquarters, USAISC 16,384
131.92.192.0/18 Headquarters, USAISC 16,384
131.250.128.0/18 Navy Network Information Center (NNIC) 16,384
134.166.0.0/18 Air Force Systems Networking 16,384
134.166.64.0/18 Air Force Systems Networking 16,384
147.241.192.0/18 Headquarters, USAISC 16,384
155.148.128.0/18 Headquarters, USAISC 16,384
155.154.192.0/18 Headquarters, USAISC 16,384
6.5.0.0/19 Headquarters, USAISC 8,192
144.252.0.0/19 Headquarters, USAISC 8,192
144.252.64.0/19 Headquarters, USAISC 8,192
155.148.192.0/19 Headquarters, USAISC 8,192
198.14.32.0/19 Air Force Systems Networking 8,192
198.253.128.0/19 Navy Network Information Center (NNIC) 8,192
6.6.16.0/20 Headquarters, USAISC 4,096
6.6.32.0/20 Headquarters, USAISC 4,096
6.6.48.0/20 Headquarters, USAISC 4,096
6.6.64.0/20 Headquarters, USAISC 4,096
6.6.80.0/20 Headquarters, USAISC 4,096
6.6.96.0/20 Headquarters, USAISC 4,096
6.6.112.0/20 Headquarters, USAISC 4,096
6.8.0.0/20 Headquarters, USAISC 4,096
6.9.0.0/20 Headquarters, USAISC 4,096
131.250.192.0/20 Navy Network Information Center (NNIC) 4,096
134.166.144.0/20 Air Force Systems Networking 4,096
147.248.48.0/20 Headquarters, USAISC 4,096
155.148.224.0/20 Headquarters, USAISC 4,096
164.122.0.0/20 Air Force Systems Networking 4,096
198.253.192.0/20 Navy Network Information Center (NNIC) 4,096
199.31.16.0/20 DoD Network Information Center 4,096
204.235.64.0/20 Headquarters, USAISC 4,096
6.6.8.0/21 Headquarters, USAISC 2,048
131.92.136.0/21 Headquarters, USAISC 2,048
131.92.144.0/21 Headquarters, USAISC 2,048
131.92.168.0/21 Headquarters, USAISC 2,048
147.241.56.0/21 Headquarters, USAISC 2,048
147.241.72.0/21 Headquarters, USAISC 2,048
147.241.80.0/21 Headquarters, USAISC 2,048
147.241.88.0/21 Headquarters, USAISC 2,048
147.241.128.0/21 Headquarters, USAISC 2,048
147.241.160.0/21 Headquarters, USAISC 2,048
147.241.168.0/21 Headquarters, USAISC 2,048
147.241.176.0/21 Headquarters, USAISC 2,048
155.148.240.0/21 Headquarters, USAISC 2,048
198.154.16.0/21 Navy Network Information Center (NNIC) 2,048
198.253.40.0/21 Navy Network Information Center (NNIC) 2,048
198.253.64.0/21 Navy Network Information Center (NNIC) 2,048
198.253.168.0/21 Navy Network Information Center (NNIC) 2,048
199.208.32.0/21 DoD Network Information Center 2,048
199.209.144.0/21 DoD Network Information Center 2,048
199.209.240.0/21 DoD Network Information Center 2,048
199.209.248.0/21 DoD Network Information Center 2,048
204.222.64.0/21 DoD Network Information Center 2,048
214.9.96.0/21 DoD Network Information Center 2,048
214.29.136.0/21 DoD Network Information Center 2,048
6.6.0.0/22 Headquarters, USAISC 1,024
131.92.132.0/22 Headquarters, USAISC 1,024
131.92.164.0/22 Headquarters, USAISC 1,024
131.92.176.0/22 Headquarters, USAISC 1,024
134.166.128.0/22 Air Force Systems Networking 1,024
140.27.8.0/22 DoD Network Information Center 1,024
147.241.96.0/22 Headquarters, USAISC 1,024
147.241.104.0/22 Headquarters, USAISC 1,024
147.241.112.0/22 Headquarters, USAISC 1,024
147.241.120.0/22 Headquarters, USAISC 1,024
192.171.8.0/22 Navy Network Information Center (NNIC) 1,024
199.209.144.0/22 DoD Network Information Center 1,024
205.66.100.0/22 Navy Network Information Center (NNIC) 1,024
131.92.162.0/23 Headquarters, USAISC 512
131.92.180.0/23 Headquarters, USAISC 512
131.92.182.0/23 Headquarters, USAISC 512
131.92.184.0/23 Headquarters, USAISC 512
134.166.132.0/23 Air Force Systems Networking 512
134.166.136.0/23 Air Force Systems Networking 512
140.27.10.0/23 DoD Network Information Center 512
140.27.12.0/23 DoD Network Information Center 512
140.27.14.0/23 DoD Network Information Center 512
198.97.234.0/23 SPACE & NAVAL WARFARE SYSTEMS CENTER 512
198.154.24.0/23 NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION 512
198.154.174.0/23 Navy Network Information Center (NNIC) 512
198.154.176.0/23 Navy Network Information Center (NNIC) 512
199.123.86.0/23 Headquarters, USAISC 512
199.123.88.0/23 Headquarters, USAISC 512
199.209.150.0/23 DoD Network Information Center 512
204.44.136.0/23 DoD Network Information Center 512
204.222.6.0/23 DoD Network Information Center 512
204.222.8.0/23 DoD Network Information Center 512
206.37.28.0/23 DoD Network Information Center 512
206.37.30.0/23 DoD Network Information Center 512
6.6.4.0/24 Headquarters, USAISC 256
6.6.5.0/24 Headquarters, USAISC 256
6.6.7.0/24 Headquarters, USAISC 256
6.7.0.0/24 Headquarters, USAISC 256
131.92.131.0/24 Headquarters, USAISC 256
131.92.186.0/24 Headquarters, USAISC 256
134.164.220.0/24 Headquarters, USAISC 256
134.166.134.0/24 Air Force Systems Networking 256
134.166.135.0/24 Air Force Systems Networking 256
134.166.138.0/24 Air Force Systems Networking 256
140.25.98.0/24 DoD Network Information Center 256
147.241.118.0/24 Headquarters, USAISC 256
147.241.126.0/24 Headquarters, USAISC 256
192.5.17.0/24 Navy Network Information Center (NNIC) 256
192.5.21.0/24 Headquarters, USAISC 256
192.5.22.0/24 Headquarters, USAISC 256
192.5.23.0/24 Headquarters, USAISC 256
192.5.148.0/24 DoD Network Information Center 256
192.12.124.0/24 Headquarters, USAISC 256
192.16.167.0/24 DoD Network Information Center 256
192.31.147.0/24 Navy Network Information Center (NNIC) 256
192.42.141.0/24 Air Force Systems Networking 256
192.48.242.0/24 Headquarters, USAISC 256
192.55.117.0/24 Headquarters, USAISC 256
192.58.244.0/24 Harry Diamond Laboratories 256
192.67.80.0/24 Air Force Systems Networking 256
192.67.93.0/24 Air Force Systems Networking 256
192.86.66.0/24 Headquarters, USAISC 256
192.88.110.0/24 Headquarters, USAISC 256
192.100.92.0/24 Air Force Systems Networking 256
192.138.87.0/24 Navy Network Information Center (NNIC) 256
192.160.158.0/24 Navy Network Information Center (NNIC) 256
192.160.159.0/24 Navy Network Information Center (NNIC) 256
192.171.12.0/24 Navy Network Information Center (NNIC) 256
192.175.87.0/24 Air Force Systems Networking 256
192.190.228.0/24 Navy Network Information Center (NNIC) 256
192.190.229.0/24 Navy Network Information Center (NNIC) 256
198.97.236.0/24 Navy Network Information Center (NNIC) 256
198.154.173.0/24 Navy Network Information Center (NNIC) 256
198.253.56.0/24 Navy Network Information Center (NNIC) 256
198.253.110.0/24 Navy Network Information Center (NNIC) 256
198.253.252.0/24 Navy Network Information Center (NNIC) 256
198.253.253.0/24 Navy Network Information Center (NNIC) 256
199.9.0.0/24 Navy Network Information Center (NNIC) 256
199.9.1.0/24 Naval Research Laboratory, Marine 256
199.9.2.0/24 Navy Network Information Center (NNIC) 256
199.10.16.0/24 Navy Network Information Center (NNIC) 256
199.10.17.0/24 Navy Network Information Center (NNIC) 256
199.10.18.0/24 Navy Network Information Center (NNIC) 256
199.10.19.0/24 Navy Network Information Center (NNIC) 256
199.10.20.0/24 Navy Network Information Center (NNIC) 256
199.10.62.0/24 Navy Network Information Center (NNIC) 256
199.10.127.0/24 Navy Network Information Center (NNIC) 256
199.10.148.0/24 Navy Network Information Center (NNIC) 256
199.10.233.0/24 Navy Network Information Center (NNIC) 256
199.31.107.0/24 DoD Network Information Center 256
199.123.90.0/24 Headquarters, USAISC 256
199.123.105.0/24 DoD Network Information Center 256
199.123.113.0/24 DoD Network Information Center 256
199.208.158.0/24 DoD Network Information Center 256
199.209.149.0/24 DoD Network Information Center 256
204.238.129.0/24 Navy Network Information Center (NNIC) 256
205.67.232.0/24 Navy Network Information Center (NNIC) 256
205.68.95.0/24 Navy Network Information Center (NNIC) 256
205.111.251.0/24 Navy Network Information Center (NNIC) 256
205.111.252.0/24 Navy Network Information Center (NNIC) 256
206.37.224.0/24 DoD Network Information Center 256
206.37.252.0/24 DoD Network Information Center 256
207.132.147.0/24 DoD Network Information Center 256
207.133.211.0/24 DoD Network Information Center 256
214.4.136.0/24 DoD Network Information Center 256
214.9.92.0/24 DoD Network Information Center 256
214.9.94.0/24 DoD Network Information Center 256
214.9.95.0/24 DoD Network Information Center 256
214.10.25.0/24 DoD Network Information Center 256
214.27.178.0/24 DoD Network Information Center 256
214.38.133.0/24 DoD Network Information Center 256

Netblock Company
2001:480::/32 High Performance Computing
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WHOIS Details

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                                                ASHandle:       AS668
                                                OrgID:          AS668
                                                ASName:         AS668
                                                ASNumber:       AS668
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA
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Hosted Domains

There are 23 domain names hosted across 22 IP addresses on this ASN.

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IP Address Domain Domains on this IP
140.32.24.147 ██████████ 2
6.6.44.4 ██████████ 2
6.3.22.26 █████████ 1
129.92.253.61 ████████ 1
131.92.251.50 ██████████ 1
140.6.184.2 ██████████ 1
6.4.12.165 █████████ 1
140.27.14.47 ██████████ 1
140.27.14.26 ███████ 1
6.14.50.37 ██████████ 1

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Hosted Domains API & Database

Peers

There are 47 peers for this ASN.

Peers Name
AS10764 University of Illinois
AS11537 Internet2
AS121 United States Department of Defense (DoD)
AS13 Headquarters, USAISC
AS137409 GSL Networks Pty LTD
AS1508 Headquarters, USAISC
AS1828 Unitas Global
AS19035 Hawaii Internet Exchange
AS20253 Qwilt Inc.
AS213 Headquarters, USAISC
AS2153 CENIC
AS22 Navy Network Information Center (NNIC)
AS22335 Metropolitan Research and Education Network
AS228 United States Department of Defense (DoD)
AS23367 Adaptive Data Networks, LLC
AS252 Headquarters, USAISC
AS2621 United States Department of Defense (DoD)
AS289 Headquarters, USAISC
AS2914 NTT America, Inc.
AS293 ESnet
AS3381 Maui High Performance Computing Center
AS366 United States Department of Defense (DoD)
AS37 Navy Network Information Center (NNIC)
AS393399 Sandia National Laboratories
AS40300 DR Fortress, LLC
AS4181 TDS TELECOM
AS4221 United States Department of Defense (DoD)
AS48 Navy Network Information Center (NNIC)
AS49544 i3D.net B.V
AS5058 Navy Network Information Center (NNIC)
AS5132 United States Department of Defense (DoD)
AS518 United States Department of Defense (DoD)
AS53828 NETWORK INNOVATIONS, LLC
AS5887 United States Department of Defense (DoD)
AS5957 United States Department of Defense (DoD)
AS5978 United States Department of Defense (DoD)
AS5980 United States Department of Defense (DoD)
AS6009 United States Department of Defense (DoD)
AS6043 United States Department of Defense (DoD)
AS6082 IPiFony Systems, Inc.
AS6360 University of Hawaii
AS687 United States Department of Defense (DoD)
AS6939 Hurricane Electric LLC
AS701 Verizon Business
AS7575 Australian Academic and Research Network (AARNet)
AS84 Navy Network Information Center (NNIC)
AS89 Navy Network Information Center (NNIC)
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ASN API & Database

Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS2914 NTT America, Inc.
AS6939 Hurricane Electric LLC
AS701 Verizon Business
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ASN API & Database

Downstreams

There are 27 downstreams for this ASN.

Downstreams Name
AS121 United States Department of Defense (DoD)
AS13 Headquarters, USAISC
AS1508 Headquarters, USAISC
AS213 Headquarters, USAISC
AS22 Navy Network Information Center (NNIC)
AS228 United States Department of Defense (DoD)
AS252 Headquarters, USAISC
AS2621 United States Department of Defense (DoD)
AS289 Headquarters, USAISC
AS3381 Maui High Performance Computing Center
AS366 United States Department of Defense (DoD)
AS37 Navy Network Information Center (NNIC)
AS393399 Sandia National Laboratories
AS4221 United States Department of Defense (DoD)
AS48 Navy Network Information Center (NNIC)
AS5058 Navy Network Information Center (NNIC)
AS5132 United States Department of Defense (DoD)
AS518 United States Department of Defense (DoD)
AS5887 United States Department of Defense (DoD)
AS5957 United States Department of Defense (DoD)
AS5978 United States Department of Defense (DoD)
AS5980 United States Department of Defense (DoD)
AS6009 United States Department of Defense (DoD)
AS6043 United States Department of Defense (DoD)
AS687 United States Department of Defense (DoD)
AS84 Navy Network Information Center (NNIC)
AS89 Navy Network Information Center (NNIC)
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ASN API & Database

Pingable IPs

1,048 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address ASN Details
143.56.240.250 AS668 United States Department of Defense (DoD) 10.82ms from Atlanta, US
155.148.168.33 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.223.51 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.10.162 AS668 United States Department of Defense (DoD) 20.35ms from Chicago, US
155.148.45.66 AS668 United States Department of Defense (DoD) 20.38ms from Chicago, US
140.32.65.27 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.26.144 AS668 United States Department of Defense (DoD) 20.37ms from Chicago, US
147.241.217.146 AS668 United States Department of Defense (DoD) 20.37ms from Chicago, US
144.252.3.129 AS668 United States Department of Defense (DoD) 20.38ms from Chicago, US
147.241.227.13 AS668 United States Department of Defense (DoD) 20.35ms from Chicago, US
155.148.166.18 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
147.241.199.239 AS668 United States Department of Defense (DoD) 20.35ms from Chicago, US
155.148.125.232 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.30.144 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.163.52 AS668 United States Department of Defense (DoD) 20.37ms from Chicago, US
155.148.58.44 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
155.148.173.70 AS668 United States Department of Defense (DoD) 20.34ms from Chicago, US
147.241.135.253 AS668 United States Department of Defense (DoD) 20.34ms from Chicago, US
155.148.144.120 AS668 United States Department of Defense (DoD) 20.35ms from Chicago, US
155.148.97.69 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
147.241.106.174 AS668 United States Department of Defense (DoD) 20.36ms from Chicago, US
6.14.197.133 AS668 United States Department of Defense (DoD) 6.40ms from Hangzhou, CN
140.31.206.151 AS668 United States Department of Defense (DoD) 0.89ms from Honolulu, US
164.122.12.159 AS668 United States Department of Defense (DoD) 0.83ms from Honolulu, US
192.175.87.231 AS668 United States Department of Defense (DoD) 3.80ms from San Jose, 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
1.121.131.60 AS1221 Telstra Limited 3.73ms from Adelaide, AU
73.129.38.28 AS7922 Comcast Cable Communications, LLC 6.30ms from Ashburn, US
54.214.24.156 AS16509 Amazon.com, Inc. 0.19ms from Boardman, US
54.148.6.140 AS16509 Amazon.com, Inc. 0.11ms from Boardman, US
78.142.241.12 AS14080 Telmex Colombia S.A. 13.53ms from Bogota, CO
136.25.198.204 AS19165 Webpass Inc. 5.15ms from Houston, US
212.131.22.28 AS3269 Telecom Italia S.p.A. 0.84ms from Milan, IT
87.239.38.44 AS49828 LLC DARNET 1.54ms from Moscow, RU
137.99.54.188 AS13796 University of Connecticut 5.95ms from New York City, US
110.129.245.44 AS9824 JCOM Co., Ltd. 12.17ms from Osaka, JP
27.202.68.156 AS4837 CHINA UNICOM China169 Backbone 7.58ms from Qingdao, CN
62.176.113.12 AS8866 Vivacom Bulgaria EAD 0.52ms from Sofia, BG
111.254.52.236 AS3462 Data Communication Business Group 3.90ms from Taichung, TW
142.114.253.124 AS577 Bell Canada 6.40ms from Toronto, CA
182.117.193.236 AS4837 CHINA UNICOM China169 Backbone 2.34ms from Zhengzhou, CN
95.9.216.28 AS9121 Turk Telekomunikasyon Anonim Sirketi 11.89ms from Bursa, TR
91.13.242.92 AS3320 Deutsche Telekom AG 4.92ms from Frankfurt am Main, DE
91.155.23.44 AS719 Elisa Oyj 0.65ms from Helsinki, FI
194.45.45.124 AS57022 HFD DATAVITA LIMITED 5.31ms from Manchester, GB
5.255.206.172 AS13238 YANDEX LLC 0.78ms from Moscow, RU
183.149.59.172 AS4134 CHINANET-BACKBONE 8.43ms from Ningbo, CN
135.180.78.60 AS46375 Sonic Telecom LLC 2.48ms from San Jose, US
189.142.159.28 AS8151 UNINET 4.79ms from Santiago de Queretaro, MX
61.252.21.44 AS17878 DREAMMARK1 1.09ms from Seoul, KR
220.119.173.76 AS4766 Korea Telecom 6.32ms from Seoul, KR

Traceroute

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

$
traceroute -a -n -q1 -m4 140.25.229.30
traceroute to 140.25.229.30 (140.25.229.30): 4 hops max, 52 byte packets
1 [AS63023] 91.239.53.1 0.222 ms
2 *
3 *
4 *
Measurement taken from IPinfo ProbeNet in Amsterdam, NL
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 AS668 at robtex.

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