AS number details

AS668

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

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AS668 – United States Department of Defense (DoD)

Field Value
Country United States
Website hpc.mil
Hosted domains 28
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 35 years ago on Apr 24, 1990
Updated 7 days ago on Sep 12, 2025
Netblock Company Num of IPs
6.14.0.0/15 Headquarters, USAISC 131,072
128.132.0.0/16 Air Force Systems Networking 65,536
129.229.0.0/16 Headquarters, USAISC 65,536
129.92.0.0/16 Air Force Systems Networking 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
132.193.0.0/16 Headquarters, USAISC 65,536
132.45.0.0/16 Air Force Systems Networking 65,536
137.128.0.0/16 Headquarters, USAISC 65,536
140.178.0.0/16 Navy Network Information Center (NNIC) 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
140.6.0.0/16 DoD Network Information Center 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
164.191.0.0/16 Navy Network Information Center (NNIC) 65,536
164.49.0.0/16 Headquarters, USAISC 65,536
6.11.0.0/16 Headquarters, USAISC 65,536
6.4.0.0/16 Headquarters, USAISC 65,536
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
6.2.0.0/17 Headquarters, USAISC 32,768
6.6.128.0/17 Headquarters, USAISC 32,768
131.250.128.0/18 Navy Network Information Center (NNIC) 16,384
131.92.192.0/18 Headquarters, USAISC 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
6.3.0.0/18 Headquarters, USAISC 16,384
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
6.5.0.0/19 Headquarters, USAISC 8,192
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
6.6.112.0/20 Headquarters, USAISC 4,096
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
6.8.0.0/20 Headquarters, USAISC 4,096
6.9.0.0/20 Headquarters, USAISC 4,096
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
147.241.128.0/21 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
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
155.148.240.0/21 Headquarters, USAISC 2,048
198.154.16.0/21 Navy Network Information Center (NNIC) 2,048
198.253.168.0/21 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
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
214.29.136.0/21 DoD Network Information Center 2,048
214.9.96.0/21 DoD Network Information Center 2,048
6.6.8.0/21 Headquarters, USAISC 2,048
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
147.241.104.0/22 Headquarters, USAISC 1,024
147.241.112.0/22 Headquarters, USAISC 1,024
147.241.120.0/22 Headquarters, USAISC 1,024
147.241.96.0/22 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
6.6.0.0/22 Headquarters, USAISC 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
198.154.174.0/23 Navy Network Information Center (NNIC) 512
198.154.176.0/23 Navy Network Information Center (NNIC) 512
198.154.24.0/23 NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION 512
198.97.234.0/23 SPACE & NAVAL WARFARE SYSTEMS CENTER 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
204.222.6.0/23 DoD Network Information Center 512
204.222.8.0/23 DoD Network Information Center 512
204.44.136.0/23 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
131.92.131.0/24 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
192.100.92.0/24 Air Force Systems Networking 256
192.12.124.0/24 Headquarters, USAISC 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
192.16.167.0/24 DoD Network Information Center 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
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
192.5.148.0/24 DoD Network Information Center 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
192.55.117.0/24 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
198.154.173.0/24 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
198.253.56.0/24 Navy Network Information Center (NNIC) 256
198.97.236.0/24 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
199.10.16.0/24 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
199.10.233.0/24 Navy Network Information Center (NNIC) 256
199.10.62.0/24 Navy Network Information Center (NNIC) 256
199.123.105.0/24 DoD Network Information Center 256
199.123.113.0/24 DoD Network Information Center 256
199.123.90.0/24 Headquarters, USAISC 256
199.208.158.0/24 DoD Network Information Center 256
199.209.149.0/24 DoD Network Information Center 256
199.31.107.0/24 DoD Network Information Center 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
204.238.129.0/24 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
205.67.232.0/24 Navy Network Information Center (NNIC) 256
205.68.95.0/24 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
214.10.25.0/24 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
214.4.136.0/24 DoD Network Information Center 256
214.4.64.0/24 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
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

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


                                                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 28 domain names hosted across 27 IP addresses on this ASN.

IP Address Domain Domains on this IP
140.32.24.147 ██████████ 2
6.6.44.4 ████████ 2
6.3.5.252 ██████████ 1
129.92.247.238 ████████ 1
6.3.3.2 ██████████ 1
140.178.211.157 ██████████ 1
6.6.8.8 ██████████ 1
140.27.14.26 ███████ 1
6.9.6.9 ██████████ 1
6.5.4.0 ██████████ 1

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Useful for Cybersecurity

Peers

There are 45 peers for this ASN.

Peers Name
AS11537 Internet2
AS121 United States Department of Defense (DoD)
AS13 Headquarters, USAISC
AS137409 GSL Networks Pty LTD
AS1508 Headquarters, USAISC
AS1828 Unitas Global
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)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

Upstreams

There are 3 upstreams for this ASN.

upstreams Name
AS2914 NTT America, Inc.
AS6939 Hurricane Electric LLC
AS701 Verizon Business
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

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)
Get this data and more insights on related domains, allocation dates, registry names, IP counts with IPinfo's IP-to-ASN product.

Pingable IPs

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

IP Address ASN Details
2001:480:185::2 AS668 United States Department of Defense (DoD) 9.60ms from Atlanta, US
147.241.112.254 AS668 United States Department of Defense (DoD) 12.20ms from Atlanta, US
140.32.134.98 AS668 United States Department of Defense (DoD) 9.56ms from Atlanta, US
140.32.45.235 AS668 United States Department of Defense (DoD) 5.25ms from Ashburn, US
131.218.136.2 AS668 United States Department of Defense (DoD) 10.88ms from Ashburn, US
2001:480:251:176::244 AS668 United States Department of Defense (DoD) 6.95ms from Atlanta, US
143.56.1.1 AS668 United States Department of Defense (DoD) 2.38ms from Los Angeles, US
2001:480:230:4201::2 AS668 United States Department of Defense (DoD) 6.68ms from Ashburn, US
164.49.3.5 AS668 United States Department of Defense (DoD) 6.86ms from Atlanta, US
143.56.247.250 AS668 United States Department of Defense (DoD) 10.59ms from San Jose, US
192.12.124.18 AS668 United States Department of Defense (DoD) 11.34ms from Ashburn, US
2001:480:1773:ffff::11 AS668 United States Department of Defense (DoD) 5.50ms from Atlanta, US
131.250.117.146 AS668 United States Department of Defense (DoD) 3.09ms from Istanbul, TR
205.111.251.38 AS668 United States Department of Defense (DoD) 7.97ms from Los Angeles, US
143.56.240.1 AS668 United States Department of Defense (DoD) 10.63ms from Mount Prospect, US
143.56.249.250 AS668 United States Department of Defense (DoD) 2.58ms from Ashburn, US
143.56.248.2 AS668 United States Department of Defense (DoD) 0.59ms from Atlanta, US
199.123.113.10 AS668 United States Department of Defense (DoD) 6.94ms from Atlanta, US
140.32.182.129 AS668 United States Department of Defense (DoD) 9.93ms from Chicago, US
140.32.61.147 AS668 United States Department of Defense (DoD) 6.60ms from Los Angeles, US
205.67.232.50 AS668 United States Department of Defense (DoD) 6.08ms from Ashburn, US
214.10.25.3 AS668 United States Department of Defense (DoD) 12.55ms from Ashburn, US
143.56.3.161 AS668 United States Department of Defense (DoD) 3.18ms from Ashburn, US
140.32.59.232 AS668 United States Department of Defense (DoD) 9.78ms from Chicago, US
131.92.211.13 AS668 United States Department of Defense (DoD) 1.90ms from Istanbul, TR

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
101.108.210.204 AS23969 TOT Public Company Limited 4.71ms from Bangkok, TH
198.36.49.60 AS14860 SMARTCOM TELEPHONE, LLC 18.55ms from Dallas, US
128.138.129.28 AS104 University of Colorado at Boulder 1.62ms from Denver, US
120.50.31.12 AS38712 Telnet Communication Limited Network and Transit Service Provider. Having Nationwide MPLS Network For Internet and Data Connectivity Through Telnets Own Network Infrastructure 0.30ms from Dhaka, BD
2.204.65.252 AS3209 Vodafone GmbH 7.98ms from Hamburg, DE
111.56.194.12 AS9808 China Mobile Communications Group Co., Ltd. 4.42ms from Hohhot, CN
108.137.50.108 AS16509 Amazon.com, Inc. 0.10ms from Jakarta, ID
75.99.200.204 AS6128 Cablevision Systems Corp. 8.01ms from New York City, US
60.163.20.220 AS4134 CHINANET-BACKBONE 6.15ms from Ningbo, CN
13.36.185.204 AS16509 Amazon.com, Inc. 0.12ms from Paris, FR
90.63.87.188 AS3215 Orange S.A. 5.71ms from Paris, FR
50.53.220.140 AS20055 Wholesail networks LLC 0.84ms from Portland, US
64.113.169.12 AS16664 CC Communications 8.21ms from San Jose, US
115.3.133.172 AS4766 Korea Telecom 1.74ms from Seoul, KR
118.37.134.44 AS4766 Korea Telecom 1.51ms from Seoul, KR
1.240.253.44 AS9318 SK Broadband Co Ltd 7.49ms from Seoul, KR
60.144.80.44 AS17676 SoftBank Corp. 3.23ms from Tokyo, JP
36.4.34.44 AS4134 CHINANET-BACKBONE 11.42ms from Wuhan, CN
179.95.207.92 AS18881 TELEFÔNICA BRASIL S.A 13.31ms from Belo Horizonte, BR
209.159.243.92 AS20412 Clarity Telecom LLC 11.34ms from Denver, US
3.249.236.140 AS16509 Amazon.com, Inc. 0.42ms from Dublin, IE
92.20.62.204 AS13285 TalkTalk Communications Limited 1.07ms from London, GB
37.143.125.28 AS43885 INSTAL MATEL SL 6.81ms from Madrid, ES
2.44.88.124 AS30722 Vodafone Italia S.p.A. 9.16ms from Milan, IT
79.25.86.188 AS3269 Telecom Italia S.p.A. 2.61ms from Milan, IT

Traceroute

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

$
traceroute -a -n -q1 -f3 -m12 128.132.141.9
traceroute to 128.132.141.9 (128.132.141.9): 12 hops max, 52 byte packets
4 *
5 *
6 *
7 *
8 [AS6939] 209.51.161.174 83.655 ms
9 [AS668] 143.56.249.2 82.029 ms
10 *
11 *
12 *
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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