21.12.0.0/16

Access unlimited lookups, API and downloads, data enrichment, and Probenet Live.

Summary

IP address summary information
ASNs	1
Countries	1
BGP Prefixes	1
Routers	0
Pingable IPs	0

United States
100.00%


21.12.0.0/24	United States100.00%	1	1
21.12.1.0/24	United States100.00%	1	1
21.12.2.0/24	United States100.00%	1	1
21.12.3.0/24	United States100.00%	1	1
21.12.4.0/24	United States100.00%	1	1
21.12.5.0/24	United States100.00%	1	1
21.12.6.0/24	United States100.00%	1	1
21.12.7.0/24	United States100.00%	1	1
21.12.8.0/24	United States100.00%	1	1
21.12.9.0/24	United States100.00%	1	1

Sub-ranges

Pingable IPs

Other Pingable IPs

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


73.142.137.32	AS7922Comcast Cable Communications, LLC	7.10ms from Boston, US
12.165.187.80	AS7018AT&T Enterprises, LLC	9.65ms from Chicago, US
87.173.87.192	AS3320Deutsche Telekom AG	5.15ms from Hamburg, DE
125.215.217.192	AS4515PCCW IMS Ltd (PCCW Business Internet Access)	2.02ms from Hong Kong, HK
59.188.83.224	AS9269Hong Kong Broadband Network Ltd.	1.15ms from Hong Kong, HK
118.212.50.64	AS4837CHINA UNICOM China169 Backbone	5.26ms from Nanchang, CN
5.55.29.0	AS3329Vodafone-panafon Hellenic Telecommunications Company SA	1.47ms from Athens, GR
119.203.60.112	AS4766Korea Telecom	3.31ms from Incheon, KR
98.203.222.176	AS7922Comcast Cable Communications, LLC	0.96ms from Seattle, US
36.230.253.160	AS3462Data Communication Business Group	1.22ms from Taipei, TW

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 -m9 21.12.5.98

traceroute to 21.12.5.98 (21.12.5.98): 9 hops max, 52 byte packets

6 [AS16276] 57.128.121.52 2.909 ms

7 *

8 *

9 *

Measurement taken from

IPinfo ProbeNet in Strasbourg, FR

On August 7, 2026

Traceroute

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

Discover why industry-leading companies around the globe love our data. IPinfo's accurate insights fuel use cases from cybersecurity, data enrichment, web personalization, and much more.

21.12.0.0/16

Summary

Sub-ranges

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

Pingable IPs

Other Pingable IPs

Traceroute

21.12.0.0/16

Summary

Statistics

Statistics

Sub-ranges

Sub-ranges

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

Pingable IPs

Other Pingable IPs

Traceroute