Telstra IP Lookup

Telstra operates the following Autonomous System Numbers (ASNs): AS1221, AS4739. Telstra operates AS1221 (Telstra Global), one of APNIC's oldest and largest ASNs; Telstra's NBN wholesaling and mobile network give it the broadest IP footprint in Australia, with connections across the Asia-Pacific. Use our IP lookup tool to identify which specific ASN a Telstra IP belongs to.

Telstra holds multiple IP address blocks allocated by its regional internet registry. These blocks are announced via BGP under AS1221 and AS4739. You can identify Telstra IP addresses using our IP lookup tool — enter any IP and check if the ISP/ASN fields show Telstra.

Enter the IP address in our IP Lookup tool. The ISP and ASN fields will show whether the IP is registered to Telstra (look for AS1221 or AS4739). You can also use our WHOIS Lookup to query the IP's network registration directly from the RIR database.

Telstra provides internet services in: Australia, Asia-Pacific. IP geolocation for Telstra addresses shows the registered location of the IP block, which may differ from the user's actual city.

Telstra is a mixed (residential + mobile + enterprise) — its customer IPs are generally classified as residential or mobile, not VPN/proxy. However, customers may run VPN servers on Telstra IP addresses, which can cause individual IPs to be flagged.