1. All IP Ranges
  2. 203.0.0.0/8
  3. 203.21.0.0/16

203.21.0.0/16 IP Range

Summary

ASNs
33
Countries
14
BGP Prefixes81
Routers
32
Pingable IPs
1,394

Top Countries

Top BGP Prefixes

Top ASNs

  • 63.28%
  • AS1221 Telstra Limited
    7.81%
  • AS133612 Vodafone Australia Pty Ltd
    4.69%
  • AS703 Verizon Business
    3.13%
  • Other
    21.09%
203.21.0.0/24 China 100%100
203.21.1.0/24 China 100%100
203.21.2.0/24 China 100%100
203.21.3.0/24 Australia 100%100
203.21.4.0/24 Serbia 100%114
203.21.5.0/24 Australia 100%110
203.21.6.0/24 Australia 100%100
203.21.7.0/24 India 100%112
203.21.8.0/24 China 100%100
203.21.9.0/24 Australia 100%110
203.21.10.0/24 China 100%100
203.21.11.0/24 Australia 100%100
203.21.12.0/24 Australia 100%110
203.21.13.0/24 Australia 100%100
203.21.14.0/24 Australia 100%100
203.21.15.0/24 Australia 100%110
203.21.16.0/24 Australia 100%100
203.21.17.0/24 Australia 100%100
203.21.18.0/24 China 100%100
203.21.19.0/24 Australia 100%100
203.21.20.0/24 Australia 100%110
203.21.21.0/24 Australia 100%110
203.21.22.0/24 Hong Kong 100%110
203.21.23.0/24 Australia 100%100
203.21.24.0/24 New Zealand 100%110
203.21.25.0/24 New Zealand 100%110
203.21.26.0/24 New Zealand 100%110
203.21.27.0/24 New Zealand 100%110
203.21.28.0/24 New Zealand 100%110
203.21.29.0/24 New Zealand 100%110
203.21.30.0/24 New Zealand 100%110
203.21.31.0/24 New Zealand 100%110
203.21.32.0/24 Australia 100%100
203.21.33.0/24 China 100%100
203.21.34.0/24 China 100%100
203.21.35.0/24 Australia 100%100
203.21.36.0/24 Australia 100%100
203.21.37.0/24 Australia 100%110
203.21.38.0/24 Australia 100%100
203.21.39.0/24 Australia 100%100
203.21.40.0/24 Australia 100%110
203.21.41.0/24 China 100%100
203.21.42.0/24 Thailand 100%111
203.21.43.0/24 Thailand 100%110
203.21.44.0/24 China 100%100
203.21.45.0/24 Australia 100%100
203.21.46.0/24 Australia 100%100
203.21.47.0/24 Canada 100%110
203.21.48.0/24 Australia 100%100
203.21.49.0/24 Australia 100%110
203.21.50.0/24 Australia 100%110
203.21.51.0/24 Australia 100%110
203.21.52.0/24 Australia 100%110
203.21.53.0/24 Australia 100%110
203.21.54.0/24 Australia 100%110
203.21.55.0/24 Australia 100%110
203.21.56.0/24 Australia 100%110
203.21.57.0/24 Australia 100%110
203.21.58.0/24 Australia 100%110
203.21.59.0/24 Australia 100%110
203.21.60.0/24 Australia 100%100
203.21.61.0/24 Australia 100%100
203.21.62.0/24 Australia 100%100
203.21.63.0/24 Australia 100%110
203.21.64.0/24 Australia 100%100
203.21.65.0/24 Romania 100%110
203.21.66.0/24 Czechia 100%111
203.21.67.0/24 Australia 100%100
203.21.68.0/24 Australia 100%100
203.21.69.0/24 Australia 100%100
203.21.70.0/24 Australia 100%100
203.21.71.0/24 Australia 100%100
203.21.72.0/24 Australia 100%110
203.21.73.0/24 Australia 100%100
203.21.74.0/24 Australia 100%100
203.21.75.0/24 Australia 100%100
203.21.76.0/24 Australia 100%112
203.21.77.0/24 Australia 100%110
203.21.78.0/24 Australia 100%110
203.21.79.0/24 Australia 100%110
203.21.80.0/24 Australia 100%100
203.21.81.0/24 Australia 100%100
203.21.82.0/24 Australia 100%100
203.21.83.0/24 Australia 100%110
203.21.84.0/24 Australia 100%100
203.21.85.0/24 Australia 100%100
203.21.86.0/24 Australia 100%100
203.21.87.0/24 Australia 100%100
203.21.88.0/24 Australia 100%110
203.21.89.0/24 Australia 100%110
203.21.90.0/24 Australia 100%110
203.21.91.0/24 Australia 100%110
203.21.92.0/24 Australia 100%100
203.21.93.0/24 Australia 100%100
203.21.94.0/24 Australia 100%100
203.21.95.0/24 Australia 100%110
203.21.96.0/24 China 100%100
203.21.97.0/24 China 100%100
203.21.98.0/24 China 100%100
203.21.99.0/24 China 100%100
203.21.100.0/24 Australia 100%100
203.21.101.0/24 Australia 100%100
203.21.102.0/24 Australia 100%100
203.21.103.0/24 Australia 100%100
203.21.104.0/24 Canada 100%110
203.21.105.0/24 Australia 100%100
203.21.106.0/24 Australia 100%100
203.21.107.0/24 Australia 100%100
203.21.108.0/24 Australia 100%110
203.21.109.0/24 Australia 100%110
203.21.110.0/24 Australia 100%110
203.21.111.0/24 Australia 100%110
203.21.112.0/24 Australia 100%111
203.21.113.0/24 Australia 100%112
203.21.114.0/24 Australia 100%113
203.21.115.0/24 Australia 100%112
203.21.116.0/24 Australia 100%112
203.21.117.0/24 Australia 100%112
203.21.118.0/24 Australia 100%112
203.21.119.0/24 Australia 100%115
203.21.120.0/24 Mongolia 100%110
203.21.121.0/24 Australia 100%110
203.21.122.0/24 Australia 100%100
203.21.123.0/24 Australia 100%100
203.21.124.0/24 China 100%100
203.21.125.0/24 Australia 100%110
203.21.126.0/24 Australia 100%100
203.21.127.0/24 Australia 100%100
203.21.128.0/24 Australia 100%110
203.21.129.0/24 Australia 100%110
203.21.130.0/24 Australia 100%110
203.21.131.0/24 Australia 100%110
203.21.132.0/24 Australia 100%100
203.21.133.0/24 Australia 100%100
203.21.134.0/24 Australia 100%110
203.21.135.0/24 Australia 100%100
203.21.136.0/24 China 100%100
203.21.137.0/24 China 100%100
203.21.138.0/24 Australia 100%100
203.21.139.0/24 Australia 100%100
203.21.140.0/24 American Samoa 100%110
203.21.141.0/24 Philippines 100%110
203.21.142.0/24 Philippines 100%110
203.21.143.0/24 Micronesia 100%110
203.21.144.0/24 Australia 100%100
203.21.145.0/24 China 100%100
203.21.146.0/24 Australia 100%100
203.21.147.0/24 Australia 100%100
203.21.148.0/24 Australia 100%100
203.21.149.0/24 Australia 100%100
203.21.150.0/24 Australia 100%111
203.21.151.0/24 Australia 100%110
203.21.152.0/24 Australia 100%110
203.21.153.0/24 Australia 100%110
203.21.154.0/24 Australia 100%110
203.21.155.0/24 Australia 100%100
203.21.156.0/24 Australia 100%100
203.21.157.0/24 Australia 100%100
203.21.158.0/24 Australia 100%100
203.21.159.0/24 Australia 100%100
203.21.160.0/24 Australia 100%100
203.21.161.0/24 Australia 100%100
203.21.162.0/24 Australia 100%100
203.21.163.0/24 Australia 100%100
203.21.164.0/24 Australia 100%100
203.21.165.0/24 Australia 100%100
203.21.166.0/24 Australia 100%100
203.21.167.0/24 Australia 100%100
203.21.168.0/24 Australia 100%100
203.21.169.0/24 Australia 100%100
203.21.170.0/24 Australia 100%100
203.21.171.0/24 Australia 100%100
203.21.172.0/24 Australia 100%100
203.21.173.0/24 Australia 100%100
203.21.174.0/24 Australia 100%100
203.21.175.0/24 Australia 100%100
203.21.176.0/24 Australia 100%100
203.21.177.0/24 Australia 100%100
203.21.178.0/24 Australia 100%100
203.21.179.0/24 Australia 100%100
203.21.180.0/24 Australia 100%100
203.21.181.0/24 Australia 100%100
203.21.182.0/24 Australia 100%110
203.21.183.0/24 Australia 100%110
203.21.184.0/24 Australia 100%100
203.21.185.0/24 Australia 100%100
203.21.186.0/24 Australia 100%100
203.21.187.0/24 Australia 100%100
203.21.188.0/24 Australia 100%100
203.21.189.0/24 Australia 100%100
203.21.190.0/24 Australia 100%111
203.21.191.0/24 Australia 100%111
203.21.192.0/24 Australia 100%110
203.21.193.0/24 Australia 100%110
203.21.194.0/24 Australia 100%110
203.21.195.0/24 Australia 100%110
203.21.196.0/24 Australia 100%110
203.21.197.0/24 Australia 100%110
203.21.198.0/24 Australia 100%110
203.21.199.0/24 Australia 100%110
203.21.200.0/24 Australia 100%110
203.21.201.0/24 Australia 100%110
203.21.202.0/24 Australia 100%110
203.21.203.0/24 Australia 100%110
203.21.204.0/24 Australia 100%100
203.21.205.0/24 Australia 100%100
203.21.206.0/24 China 100%100
203.21.207.0/24 Australia 100%110
203.21.208.0/24 Australia 100%100
203.21.209.0/24 Australia 100%100
203.21.210.0/24 Australia 100%100
203.21.211.0/24 Australia 100%100
203.21.212.0/24 Australia 100%100
203.21.213.0/24 Australia 100%100
203.21.214.0/24 Australia 100%100
203.21.215.0/24 Australia 100%100
203.21.216.0/24 Australia 100%100
203.21.217.0/24 Australia 100%100
203.21.218.0/24 Australia 100%100
203.21.219.0/24 Australia 100%100
203.21.220.0/24 Australia 100%100
203.21.221.0/24 Australia 100%100
203.21.222.0/24 Australia 100%100
203.21.223.0/24 Australia 100%100
203.21.224.0/24 Australia 100%100
203.21.225.0/24 Australia 100%100
203.21.226.0/24 Australia 100%100
203.21.227.0/24 Australia 100%100
203.21.228.0/24 Australia 100%100
203.21.229.0/24 Australia 100%100
203.21.230.0/24 Australia 100%100
203.21.231.0/24 Australia 100%100
203.21.232.0/24 Australia 100%100
203.21.233.0/24 Australia 100%100
203.21.234.0/24 Australia 100%100
203.21.235.0/24 Australia 100%100
203.21.236.0/24 Australia 100%100
203.21.237.0/24 Australia 100%100
203.21.238.0/24 Australia 100%100
203.21.239.0/24 Australia 100%100
203.21.240.0/24 Australia 100%100
203.21.241.0/24 Australia 100%100
203.21.242.0/24 Australia 100%100
203.21.243.0/24 Australia 100%100
203.21.244.0/24 Australia 100%100
203.21.245.0/24 Australia 100%100
203.21.246.0/24 Australia 100%100
203.21.247.0/24 Australia 100%100
203.21.248.0/24 Australia 100%100
203.21.249.0/24 Australia 100%100
203.21.250.0/24 Australia 100%100
203.21.251.0/24 Australia 100%100
203.21.252.0/24 Australia 100%100
203.21.253.0/24 Australia 100%100
203.21.254.0/24 Australia 100%100
203.21.255.0/24 Australia 100%100

Pingable IPs

1,394 IPs in this range replied to an ICMP ping during our most recent internet scan. Learn more.
203.21.119.140AS133612 Vodafone Australia Pty Ltd0.79ms from Sydney,  AU
203.21.37.3AS7575 Australian Academic and Research Network (AARNet)0.56ms from Sydney,  AU
203.21.47.1AS18986 Calligo (Canada) Inc.1.80ms from Toronto,  CA
203.21.43.11AS56118 OCSC-TH3.87ms from Bangkok,  TH
203.21.42.1AS56118 OCSC-TH2.96ms from Bangkok,  TH
203.21.115.144AS133612 Vodafone Australia Pty Ltd1.25ms from Melbourne,  AU
203.21.76.65AS38549 Viewbank Rise Networks2.07ms from Melbourne,  AU
203.21.9.9AS10143 Exetel Pty Ltd4.51ms from Sydney,  AU
203.21.108.2AS133612 Vodafone Australia Pty Ltd0.72ms from Sydney,  AU
203.21.20.20AS4739 Internode Pty Ltd1.53ms from Melbourne,  AU

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.
170.80.123.32AS266377 SKYNET PROVEDOR DE INTERNET LTDA7.04ms from Fortaleza,  BR
217.31.170.112AS8473 Bahnhof AB1.94ms from Goeteborg,  SE
75.222.81.192AS6167 Verizon Business13.23ms from Los Angeles,  US
88.216.40.96AS9009 M247 Europe SRL0.40ms from New York City,  US
54.85.42.144AS14618 Amazon.com, Inc.0.11ms from Reston,  US
97.191.53.224AS6167 Verizon Business12.76ms from San Jose,  US
71.138.136.0AS7018 AT&T Enterprises, LLC3.25ms from San Jose,  US
23.12.112.48AS16625 Akamai Technologies, Inc.0.09ms from Santiago,  CL
180.182.135.128AS17839 LG HelloVision Corp.1.73ms from Seoul,  KR
220.77.223.240AS4766 Korea Telecom1.66ms from Seoul,  KR

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.
$
traceroute -a -n -q1 203.21.79.10
traceroute to 203.21.79.10 (203.21.79.10): 64 hops max, 52 byte packets
2 *
3 [AS7545] 27.32.160.67 1.049 ms
4 [AS7545] 202.7.162.202 1.745 ms
5 *
6 *
7 [AS2764] 210.8.210.198 10.792 ms
8 [AS2764] 203.21.79.10 12.38 ms
Measurement taken from  IPinfo ProbeNet in Melbourne, AU
On