ASN Lookup

An ASN lookup helps you identify the Autonomous System Number (ASN) behind an IP address, including the ISP, network owner, and routing details. Use it to better understand IP ownership and network behavior.

Enter Autonomous System Number (ASN)

Result

Overview - AS1221

 Australia

1221

Telstra Limited

telstra.com.au

-

13,400,320

324.6 Nonillion

IP Coverage

Netblock Number of IPs   
1.120.0.0/13 524,288
1.128.0.0/11 2,097,152
58.160.0.0/13 524,288
58.168.0.0/14 262,144
58.172.0.0/14 262,144
60.224.0.0/13 524,288
61.8.0.0/19 8,192
61.9.128.0/17 32,768
66.111.164.0/24 256
66.111.166.0/24 256
66.111.168.0/24 256
66.111.171.0/24 256
66.111.173.0/24 256
101.103.0.0/16 65,536
101.160.0.0/14 262,144
101.164.0.0/15 131,072
101.166.0.0/16 65,536
101.167.0.0/17 32,768
101.167.128.0/19 8,192
101.167.160.0/20 4,096
101.167.224.0/19 8,192
101.168.0.0/13 524,288
101.176.0.0/12 1,048,576
103.58.34.0/24 256
103.58.35.0/24 256
103.58.212.0/24 256
103.70.56.0/24 256
103.78.241.0/24 256
103.101.135.0/24 256
103.136.214.0/24 256
103.136.215.0/24 256
103.149.43.0/24 256
103.195.64.0/24 256
103.207.92.0/24 256
103.226.244.0/23 512
103.247.118.0/24 256
103.247.119.0/24 256
110.140.0.0/15 131,072
110.142.0.0/16 65,536
110.143.0.0/16 65,536
110.144.0.0/13 524,288
120.144.0.0/13 524,288
120.152.0.0/14 262,144
120.156.0.0/15 131,072
120.158.0.0/16 65,536
121.208.0.0/14 262,144
121.212.0.0/14 262,144
121.216.0.0/13 524,288
122.200.24.0/23 512
123.209.0.0/16 65,536
123.210.0.0/15 131,072
124.176.0.0/14 262,144
124.180.0.0/14 262,144
124.184.0.0/14 262,144
124.188.0.0/14 262,144
125.255.0.0/16 65,536
129.41.78.0/24 256
136.238.200.0/24 256
137.147.0.0/16 65,536
138.130.0.0/16 65,536
138.217.0.0/16 65,536
139.130.0.0/16 65,536
139.134.0.0/16 65,536
139.168.0.0/16 65,536
143.223.18.0/24 256
143.223.87.0/24 256
143.238.0.0/16 65,536
144.130.0.0/17 32,768
144.130.144.0/20 4,096
144.130.160.0/19 8,192
144.130.192.0/18 16,384
144.131.0.0/16 65,536
144.132.0.0/16 65,536
144.133.0.0/16 65,536
144.134.0.0/16 65,536
144.135.0.0/16 65,536
144.136.0.0/16 65,536
144.137.0.0/16 65,536
144.139.0.0/16 65,536
144.140.0.0/16 65,536
146.144.9.0/24 256
147.69.0.0/16 65,536
149.135.0.0/16 65,536
149.176.112.0/24 256
149.176.116.0/24 256
149.176.172.0/24 256
149.176.221.0/24 256
149.176.223.0/24 256
149.176.225.0/24 256
149.176.226.0/24 256
149.176.227.0/24 256
149.176.244.0/24 256
149.176.246.0/24 256
149.176.248.0/24 256
149.176.250.0/24 256
149.176.251.0/24 256
149.176.252.0/24 256
149.176.253.0/24 256
149.176.254.0/24 256
149.176.255.0/24 256
156.22.1.0/24 256
156.22.2.0/24 256
158.45.0.0/22 1,024
158.45.13.0/24 256
158.45.14.0/24 256
158.45.60.0/22 1,024
158.45.100.0/24 256
158.45.104.0/24 256
158.45.112.0/24 256
158.45.116.0/24 256
158.45.120.0/24 256
158.146.145.0/24 256
158.146.152.0/24 256
159.222.184.0/24 256
160.187.61.0/24 256
164.108.9.0/24 256
164.108.10.0/24 256
164.108.12.0/24 256
164.108.13.0/24 256
164.108.17.0/24 256
164.108.24.0/22 1,024
164.108.104.0/24 256
164.108.181.0/24 256
165.228.0.0/16 65,536
168.233.31.0/24 256
180.94.27.0/24 256
192.67.84.0/24 256
192.70.219.0/24 256
192.73.66.0/24 256
192.74.139.0/24 256
192.74.140.0/22 1,024
192.74.144.0/20 4,096
192.74.160.0/19 8,192
192.74.192.0/20 4,096
192.74.208.0/24 256
192.82.143.0/24 256
192.111.105.0/24 256
192.131.27.0/24 256
192.131.28.0/23 512
192.131.30.0/24 256
192.131.150.0/24 256
192.148.116.0/22 1,024
192.148.120.0/21 2,048
192.148.128.0/19 8,192
192.148.160.0/22 1,024
192.148.164.0/23 512
192.158.45.0/24 256
192.195.197.0/24 256
192.243.20.0/24 256
192.243.21.0/24 256
192.243.22.0/24 256
192.243.23.0/24 256
198.57.15.0/24 256
202.1.240.0/20 4,096
202.3.74.0/24 256
202.4.181.0/24 256
202.7.64.0/19 8,192
202.8.92.0/24 256
202.12.128.0/18 16,384
202.12.192.0/19 8,192
202.12.224.0/20 4,096
202.12.240.0/23 512
202.12.242.0/24 256
202.36.14.0/24 256
202.47.86.0/24 256
202.58.226.0/24 256
202.70.143.0/24 256
202.93.155.0/24 256
203.2.228.0/24 256
203.3.100.0/24 256
203.3.101.0/24 256
203.3.102.0/24 256
203.4.130.0/24 256
203.4.131.0/24 256
203.4.192.0/24 256
203.4.193.0/24 256
203.4.196.0/24 256
203.5.58.0/24 256
203.5.88.0/24 256
203.5.176.0/24 256
203.5.177.0/24 256
203.6.127.0/24 256
203.6.170.0/24 256
203.6.171.0/24 256
203.8.90.0/24 256
203.8.107.0/24 256
203.9.190.0/23 512
203.11.4.0/24 256
203.12.42.0/24 256
203.12.62.0/24 256
203.12.83.0/24 256
203.12.132.0/24 256
203.12.144.0/21 2,048
203.12.231.0/24 256
203.13.21.0/24 256
203.13.76.0/24 256
203.13.77.0/24 256
203.14.0.0/20 4,096
203.14.116.0/23 512
203.14.160.0/24 256
203.14.161.0/24 256
203.14.222.0/24 256
203.14.223.0/24 256
203.15.68.0/24 256
203.15.254.0/24 256
203.16.140.0/24 256
203.16.180.0/22 1,024
203.17.40.0/21 2,048
203.17.162.0/24 256
203.18.34.0/24 256
203.18.35.0/24 256
203.18.76.0/23 512
203.18.112.0/20 4,096
203.20.43.0/24 256
203.20.87.0/24 256
203.20.197.0/24 256
203.20.199.0/24 256
203.20.238.0/24 256
203.20.239.0/24 256
203.21.49.0/24 256
203.21.50.0/24 256
203.21.51.0/24 256
203.21.52.0/24 256
203.21.53.0/24 256
203.21.54.0/24 256
203.21.55.0/24 256
203.21.56.0/24 256
203.21.57.0/24 256
203.21.58.0/24 256
203.21.59.0/24 256
203.21.63.0/24 256
203.21.192.0/24 256
203.21.193.0/24 256
203.21.194.0/24 256
203.21.195.0/24 256
203.21.196.0/24 256
203.21.197.0/24 256
203.21.198.0/24 256
203.21.199.0/24 256
203.22.83.0/24 256
203.22.129.0/24 256
203.22.134.0/24 256
203.22.147.0/24 256
203.22.150.0/24 256
203.23.20.0/24 256
203.23.21.0/24 256
203.23.41.0/24 256
203.23.75.0/24 256
203.23.86.0/24 256
203.24.32.0/23 512
203.24.126.0/24 256
203.24.134.0/23 512
203.24.170.0/24 256
203.24.194.0/24 256
203.25.248.0/24 256
203.25.253.0/24 256
203.26.8.0/22 1,024
203.26.175.0/24 256
203.26.178.0/24 256
203.26.245.0/24 256
203.27.56.0/24 256
203.27.69.0/24 256
203.27.72.0/24 256
203.27.128.0/18 16,384
203.27.193.0/24 256
203.27.237.0/24 256
203.28.234.0/24 256
203.29.94.0/24 256
203.29.160.0/20 4,096
203.30.64.0/24 256
203.30.92.0/23 512
203.30.94.0/23 512
203.30.201.0/24 256
203.31.62.0/24 256
203.31.63.0/24 256
203.32.16.0/24 256
203.32.17.0/24 256
203.32.18.0/24 256
203.32.19.0/24 256
203.33.151.0/24 256
203.33.251.0/24 256
203.34.33.0/24 256
203.34.41.0/24 256
203.34.68.0/24 256
203.34.78.0/23 512
203.34.131.0/24 256
203.34.223.0/24 256
203.34.228.0/24 256
203.34.229.0/24 256
203.35.0.0/16 65,536
203.36.0.0/14 262,144
203.40.0.0/13 524,288
203.48.0.0/14 262,144
203.52.0.0/15 131,072
203.54.0.0/16 65,536
203.55.15.0/24 256
203.55.98.0/24 256
203.55.180.0/24 256
203.55.186.0/24 256
203.56.94.0/24 256
203.57.219.0/24 256
203.58.32.0/19 8,192
203.58.64.0/18 16,384
203.58.128.0/17 32,768
203.62.148.0/22 1,024
203.62.202.0/24 256
203.62.205.0/24 256
203.62.248.0/21 2,048
203.92.224.0/20 4,096
203.92.240.0/21 2,048
203.92.248.0/24 256
203.92.249.0/24 256
203.92.250.0/23 512
203.92.252.0/24 256
203.92.253.0/24 256
203.92.254.0/23 512
203.100.224.0/19 8,192
203.143.192.0/19 8,192
203.143.224.0/19 8,192
203.148.93.0/24 256
206.225.235.0/24 256
210.23.128.0/19 8,192

Show more IP address ranges »

Netblock Number of IPs   
2001:360::/44 19,342,813,113,834,066,795,298,816
2001:360:10::/47 2,417,851,639,229,258,349,412,352
2001:360:16::/47 2,417,851,639,229,258,349,412,352
2001:360:18::/45 9,671,406,556,917,033,397,649,408
2001:360:20::/43 38,685,626,227,668,133,590,597,632
2001:360:40::/42 77,371,252,455,336,267,181,195,264
2001:360:80::/41 154,742,504,910,672,534,362,390,528
2001:360:100::/40 309,485,009,821,345,068,724,781,056
2001:360:200::/39 618,970,019,642,690,137,449,562,112
2001:360:400::/38 1,237,940,039,285,380,274,899,124,224
2001:360:800::/37 2,475,880,078,570,760,549,798,248,448
2001:360:1000::/36 4,951,760,157,141,521,099,596,496,896
2001:360:2000::/36 4,951,760,157,141,521,099,596,496,896
2001:360:4000::/34 19,807,040,628,566,084,398,385,987,584
2001:360:8000::/33 39,614,081,257,132,168,796,771,975,168
2001:df2:b880::/48 1,208,925,819,614,629,174,706,176
2001:8000::/20 324,518,553,658,426,726,783,156,020,576,256
2401:a480::/48 1,208,925,819,614,629,174,706,176

Show more IP address ranges »

Geographic Distribution (IPv4)

Australia
 99.93%
United States of America
 0.03%
Papua New Guinea
 0.03%
Switzerland
 0%

Usage & Classification (IPv4)

(COM) Commercial

0.3%

(DCH) Data Center/Web Hosting/Transit

0.27%

(ISP) Fixed Line ISP

0.09%

(GOV) Government

0.08%

Commercial (COM)

Commercial networks are operated by for-profit businesses ranging from local startups to multinational corporations. These IPs facilitate e-commerce, internal corporate operations, and general business activities aimed at generating revenue.

Data Center/Web Hosting/Transit (DCH)

This category encompasses data centers, cloud hosting providers, and the transit networks that form the internet's backbone. These IPs are built for high-capacity and maximum uptime, supporting the infrastructure that hosts websites and cloud-based software.

Fixed Line ISP (ISP)

Internet Service Providers in this category offer wired broadband connections to homes, offices, and commercial buildings. They are responsible for the fundamental routing of internet traffic and the management of regional network infrastructure.

Government (GOV)

Government IPs are assigned to official agencies and entities at local, regional, and national levels. These networks are critical for managing public services, regulatory functions, and general administrative tasks.

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