Based on the provided information, it appears that the caller with the number +64268852121 is likely a telemarketer or scammer, given that they called in conjunction with multiple Australian spam mobile numbers. The fact that the caller left no message suggests that they may be using an automated dialing system, which is often used for spam or phishing purposes. The caller's behavior is consistent with that of unwanted callers who attempt to contact multiple numbers in a short period. Overall, the caller's intentions seem suspicious, and it is recommended to exercise caution when interacting with this number.
A call arrived shortly after several Australian spam mobiles, and the caller didn't leave a message.