AS1221 is an AS number assigned to Telstra Limited. Country or region: Australia.

OrganizationTelstra Limited
Registered nameASN-TELSTRA
CountryAustralia (AU)
IPv4 addresses13,387,261
IPv4 ranges297
IPv6 ranges158
RegistrationLook up the holder and the abuse contact in IP Lookup

AS numbers: Australia

IPv4 address ranges (largest 20)

Range (CIDR)AddressesCheck
1.144.0.0/12 1,048,576 Check if your IP is in this range
58.160.0.0/12 1,048,576 Check if your IP is in this range
121.208.0.0/12 1,048,576 Check if your IP is in this range
124.176.0.0/12 1,048,576 Check if your IP is in this range
1.120.0.0/13 524,288 Check if your IP is in this range
1.128.0.0/13 524,288 Check if your IP is in this range
60.224.0.0/13 524,288 Check if your IP is in this range
101.168.0.0/13 524,288 Check if your IP is in this range
110.144.0.0/13 524,288 Check if your IP is in this range
120.144.0.0/13 524,288 Check if your IP is in this range
203.40.0.0/13 524,288 Check if your IP is in this range
1.136.0.0/14 262,144 Check if your IP is in this range
101.160.0.0/14 262,144 Check if your IP is in this range
101.176.0.0/14 262,144 Check if your IP is in this range
101.184.0.0/14 262,144 Check if your IP is in this range
110.140.0.0/14 262,144 Check if your IP is in this range
120.152.0.0/14 262,144 Check if your IP is in this range
144.132.0.0/14 262,144 Check if your IP is in this range
203.36.0.0/14 262,144 Check if your IP is in this range
203.48.0.0/14 262,144 Check if your IP is in this range

AS numbers of a similar size

About the data

Compiled by this site from publicly available internet registry assignment information and IP address range data. The data date is the build date of the data when the content of this page last changed. Adjacent ranges are merged and expressed as CIDR blocks, so they may differ from the routes actually announced.

This product includes GeoLite2 data created by MaxMind, available from https://www.maxmind.com.