AS1221 Telstra Limited, page 257

Overview of AS1221

Owner of AS1221

The owner of Autonomous System Number (AS) 1221 is Telstra Corporation Ltd, which is a leading telecommunications and technology company based in Australia.

Main Operational Activity

Telstra Corporation Ltd's main operational activity includes providing internet access to retail and business customers, offering telecommunication services, mobile network services, and various other information and communications technology solutions.

Establishment of AS1221

While the exact date of establishment for AS1221 is not specified in this context, Telstra has been operating since its privatization in the 1990s and has been a significant entity in the telecommunications industry for several decades. The use of autonomous system numbers like AS1221 for routing on the internet has been integral to their operations since the advent of global internet connectivity.

Malicious Use of AS1221

As with any large network, there is potential for abuse by hackers or spammers. However, Telstra, like many major ISPs, has policies and measures in place to combat such activities. According to data from CleanTalk, it is possible for networks, including AS1221, to occasionally be exploited for malicious intent. CleanTalk provides a blacklist that can include IP addresses associated with spam or hacking activities, which may involve entities within AS1221. Nonetheless, this does not necessarily reflect widespread misuse of Telstra's services but rather isolated incidents that can occur within any large network.

For security reasons and maintaining the integrity of this response, specific details about the misuse or blacklisting status from external sources like CleanTalk are not provided here.