173.21.0.0/16

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Summary

IP address summary information
ASNs	1
Countries	1
BGP Prefixes	59
Routers	18
Pingable IPs	26,265

United States
100.00%


173.21.0.0/24	United States100.00%	1	1	1
173.21.1.0/24	United States100.00%	1	1	0
173.21.2.0/24	United States100.00%	1	1	0
173.21.3.0/24	United States100.00%	1	1	0
173.21.4.0/24	United States100.00%	1	1	0
173.21.5.0/24	United States100.00%	1	1	0
173.21.6.0/24	United States100.00%	1	1	0
173.21.7.0/24	United States100.00%	1	1	0
173.21.8.0/24	United States100.00%	1	1	0
173.21.9.0/24	United States100.00%	1	1	0

Sub-ranges

Important routers in 173.21.0.0/16


173.21.48.1	Daphne, United States	AS30036Mediacom Communications Corp
173.21.160.1	Virginia, United States	AS30036Mediacom Communications Corp
173.21.152.209	Maquoketa, United States	AS30036Mediacom Communications Corp
173.21.80.1	Brewton, United States	AS30036Mediacom Communications Corp
173.21.236.1	Williamsburg, United States	AS30036Mediacom Communications Corp
173.21.0.1	Monroeville, United States	AS30036Mediacom Communications Corp
173.21.32.1	Rantoul, United States	AS30036Mediacom Communications Corp
173.21.109.1	Springfield, United States	AS30036Mediacom Communications Corp
173.21.112.1	Semmes, United States	AS30036Mediacom Communications Corp
173.21.154.1	Miramar Beach, United States	AS30036Mediacom Communications Corp

Important routers in 173.21.0.0/16

Pingable IPs

26,265 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.


173.21.24.1	AS30036Mediacom Communications Corp	4.68ms from Atlanta, US
173.21.88.1	AS30036Mediacom Communications Corp	5.88ms from Atlanta, US
173.21.11.250	AS30036Mediacom Communications Corp	10.88ms from Chicago, US
173.21.150.166	AS30036Mediacom Communications Corp	8.69ms from Atlanta, US
173.21.54.127	AS30036Mediacom Communications Corp	15.35ms from Atlanta, US
173.21.103.1	AS30036Mediacom Communications Corp	9.46ms from Minneapolis, US
173.21.166.72	AS30036Mediacom Communications Corp	12.21ms from Minneapolis, US
173.21.115.178	AS30036Mediacom Communications Corp	16.86ms from Atlanta, US
173.21.81.227	AS30036Mediacom Communications Corp	14.25ms from Atlanta, US
173.21.142.138	AS30036Mediacom Communications Corp	6.70ms from Atlanta, US

Other Pingable IPs

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


59.110.234.32	AS37963Hangzhou Alibaba Advertising Co.,Ltd.	1.93ms from Beijing, CN
79.251.19.176	AS3320Deutsche Telekom AG	2.25ms from Duesseldorf, DE
220.187.124.144	AS4134CHINANET BACKBONE	9.38ms from Hangzhou, CN
116.99.232.128	AS24086Viettel Corporation	19.68ms from Ho Chi Minh City, VN
171.247.52.0	AS7552Viettel Group	2.29ms from Ho Chi Minh City, VN
218.234.23.240	AS9318SK Broadband Co Ltd	0.88ms from Incheon, KR
43.170.247.0	AS139341ACE	0.14ms from Osasco, BR
54.172.245.64	AS14618Amazon.com, Inc.	0.24ms from Reston, US
97.171.226.176	AS6167Verizon Business	17.44ms from Denver, US
68.148.135.64	AS6327Shaw Communications	6.94ms from Edmonton, CA

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 -f2 173.21.33.164

traceroute to 173.21.33.164 (173.21.33.164): 64 hops max, 52 byte packets

2 [AS16509] 99.83.68.188 9.957 ms

3 [AS16509] 99.83.68.189 10.197 ms

4 [] 68.66.73.121 13.295 ms

5 [] 68.66.73.71 13.206 ms

6 [] 68.66.73.69 12.407 ms

7 *

8 *

9 *

10 [AS30036] 173.21.33.164 25.174 ms

Measurement taken from

IPinfo ProbeNet in Columbus, US

On July 12, 2026

Traceroute

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173.21.0.0/16

Summary

Sub-ranges

Important routers in 173.21.0.0/16

Important routers in 173.21.0.0/16

Pingable IPs

Other Pingable IPs

Pingable IPs

Traceroute

Traceroute

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Summarize IPs

Important routers in 173.21.0.0/16

Pingable IPs

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Traceroute

173.21.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

Important routers in 173.21.0.0/16

Important routers in 173.21.0.0/16

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 173.21.0.0/16

Pingable IPs

Other Pingable IPs

Traceroute