172.66.0.0/16

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Summary

IP address summary information
ASNs	1
Countries	2
BGP Prefixes	11
Routers	7
Pingable IPs	22,528

United States
100.00%
Saudi Arabia
0.00%


172.66.0.0/24	United States100.00%	1	1	2
172.66.1.0/24	United States100.00%	1	1	0
172.66.2.0/24	United States100.00%	1	1	0
172.66.3.0/24	United States99.61%	2	1	0
172.66.4.0/24	United States100.00%	1	0	0
172.66.5.0/24	United States100.00%	1	0	0
172.66.6.0/24	United States100.00%	1	0	0
172.66.7.0/24	United States100.00%	1	0	0
172.66.8.0/24	United States100.00%	1	0	0
172.66.9.0/24	United States100.00%	1	0	0

Sub-ranges

Important routers in 172.66.0.0/16


172.66.66.2	San Francisco, United States	—
172.66.55.1	San Francisco, United States	—
172.66.55.6	San Francisco, United States	—
172.66.55.2	San Francisco, United States	—
172.66.21.2	San Francisco, United States	—
172.66.22.2	San Francisco, United States	—
172.66.11.2	San Francisco, United States	—
172.66.64.66	San Francisco, United States	—
172.66.22.1	San Francisco, United States	—
172.66.21.1	San Francisco, United States	—

Important routers in 172.66.0.0/16

Pingable IPs

22,528 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.


172.66.1.1	AS13335Cloudflare, Inc.	0.11ms from Tirana, AL
172.66.2.224	AS13335Cloudflare, Inc.	0.10ms from Lima, PE
172.66.3.14	AS13335Cloudflare, Inc.	0.10ms from Wrocław, PL
172.66.40.20	AS13335Cloudflare, Inc.	0.10ms from Wrocław, PL
172.66.42.15	AS13335Cloudflare, Inc.	0.10ms from Wrocław, PL
172.66.0.163	AS13335Cloudflare, Inc.	0.10ms from Wrocław, PL
172.66.41.181	AS13335Cloudflare, Inc.	0.10ms from Wrocław, PL
172.66.142.219	AS13335Cloudflare, Inc.	0.11ms from Yerevan, AM
172.66.160.146	AS13335Cloudflare, Inc.	0.11ms from Yerevan, AM
172.66.47.175	AS13335Cloudflare, Inc.	0.11ms from Yerevan, AM

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.


193.150.130.176	AS50833FIBER TELECOM s.r.o.	0.63ms from Amsterdam, NL
46.246.49.208	AS42708Glesys AB	0.09ms from Falkenberg, SE
206.43.203.32	AS267587CLICK SPEED SERVICOS DE TELECOMUNICACOES LTDA - EP	19.26ms from Fortaleza, BR
58.183.214.144	AS18144Enecom,Inc.	1.53ms from Hiroshima, JP
112.149.52.176	AS17858LG POWERCOMM	5.97ms from Incheon, KR
116.127.64.32	AS9318SK Broadband Co Ltd	1.39ms from Incheon, KR
125.161.51.192	AS7713PT Telekomunikasi Indonesia	2.47ms from Jakarta, ID
41.15.186.32	AS29975Vodacom	14.16ms from Johannesburg, ZA
81.147.71.80	AS2856British Telecommunications Limited	4.50ms from London, GB
134.17.138.160	AS25106Mobile TeleSystems JLLC	1.00ms from Minsk, BY

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 -f6 172.66.215.186

traceroute to 172.66.215.186 (172.66.215.186): 64 hops max, 52 byte packets

6 [AS13335] 172.66.215.186 0.142 ms

Measurement taken from

IPinfo ProbeNet in Yerevan, AM

On August 15, 2026

Traceroute

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172.66.0.0/16

Summary

Sub-ranges

Important routers in 172.66.0.0/16

Important routers in 172.66.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

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Important routers in 172.66.0.0/16

Pingable IPs

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Traceroute

172.66.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

Important routers in 172.66.0.0/16

Important routers in 172.66.0.0/16

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 172.66.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute