171.66.0.0/16

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Summary

IP address summary information
ASNs	1
Countries	1
BGP Prefixes	1
Routers	59
Pingable IPs	1,950

United States
100.00%


171.66.0.0/24	United States100.00%	1	1	6
171.66.1.0/24	United States100.00%	1	1	0
171.66.2.0/24	United States100.00%	1	1	0
171.66.3.0/24	United States100.00%	1	1	1
171.66.4.0/24	United States100.00%	1	1	0
171.66.5.0/24	United States100.00%	1	1	0
171.66.6.0/24	United States100.00%	1	1	0
171.66.7.0/24	United States100.00%	1	1	0
171.66.8.0/24	United States100.00%	1	1	0
171.66.9.0/24	United States100.00%	1	1	0

Sub-ranges

Important routers in 171.66.0.0/16


171.66.252.213	San Jose, United States	AS32Stanford University
171.66.252.205	San Jose, United States	AS32Stanford University
171.66.0.225	San Jose, United States	AS32Stanford University
171.66.255.224	San Jose, United States	AS32Stanford University
171.66.255.192	San Jose, United States	AS32Stanford University
171.66.252.53	San Jose, United States	AS32Stanford University
171.66.252.13	San Jose, United States	AS32Stanford University
171.66.252.21	San Jose, United States	AS32Stanford University
171.66.252.45	San Jose, United States	AS32Stanford University
171.66.252.181	San Jose, United States	AS32Stanford University

Important routers in 171.66.0.0/16

Pingable IPs

1,950 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.


171.66.79.193	AS32Stanford University	1.50ms from San Jose, US
171.66.255.224	AS32Stanford University	1.15ms from San Jose, US
171.66.102.15	AS32Stanford University	1.48ms from San Jose, US
171.66.160.103	AS32Stanford University	1.18ms from San Jose, US
171.66.1.252	AS32Stanford University	1.16ms from San Jose, US
171.66.229.70	AS32Stanford University	1.60ms from San Jose, US
171.66.253.29	AS32Stanford University	1.18ms from San Jose, US
171.66.231.251	AS32Stanford University	1.67ms from San Jose, US
171.66.8.1	AS32Stanford University	1.26ms from San Jose, US
171.66.31.1	AS32Stanford University	1.41ms 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.


51.112.83.32	AS16509Amazon.com, Inc.	4.48ms from Al Fujairah City, AE
129.159.71.64	AS31898Oracle Corporation	0.37ms from Ashburn, US
104.139.75.160	AS11426Charter Communications Inc	7.90ms from Charlotte, US
20.239.7.112	AS8075Microsoft Corporation	0.34ms from Hong Kong, HK
88.85.210.0	AS51604JSC "ER-Telecom Holding"	13.86ms from Kazan, RU
60.165.206.192	AS4134CHINANET BACKBONE	7.97ms from Lanzhou, CN
209.50.17.32	AS15108Allo Communications LLC	4.13ms from Lincoln, US
71.3.1.128	AS2379CenturyLink Communications, LLC	3.13ms from Miami, US
68.173.3.144	AS12271Charter Communications Inc	7.21ms from New York City, US
47.17.62.192	AS6128Cablevision Systems Corp.	8.33ms from New York City, US

Pingable IPs

Traceroute

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

$ traceroute -a -n -q1 -f4 -m14 171.66.204.149

traceroute to 171.66.204.149 (171.66.204.149): 14 hops max, 52 byte packets

4 [AS3491] 63.223.34.146 0.446 ms

5 [] 103.162.254.63 0.583 ms

6 [] 103.16.102.81 2.803 ms

7 [AS6939] 184.104.199.10 67.052 ms

8 [AS6939] 184.104.194.37 176.899 ms

9 [AS6939] 184.105.65.113 176.716 ms

10 [AS6939] 72.52.92.133 179.668 ms

11 [AS6939] 184.105.177.238 175.526 ms

12 *

13 *

14 *

Measurement taken from

IPinfo ProbeNet in Singapore, SG

On July 12, 2026

Traceroute

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171.66.0.0/16

Summary

Sub-ranges

Important routers in 171.66.0.0/16

Important routers in 171.66.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

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Important routers in 171.66.0.0/16

Pingable IPs

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Traceroute

171.66.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

Important routers in 171.66.0.0/16

Important routers in 171.66.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

An API built with users in mind: reliable, accurate, and easy-to-use

Our IP tools

What is my IP?

Map IPs

Summarize IPs

Statistics

Sub-ranges

Important routers in 171.66.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute