Zend certified PHP/Magento developer

What sort of IP address is this 2601:646:200:bbf:1da4:d869:d0d4:d3ed and should I be concerned that it tried to log into one of my financial accounts?

I was notified this this IP address tried to log into one of my financial accounts. What is this type of address and should I be concerned? Any information on this address would be helpful.

2601:646:200:bbf:1da4:d869:d0d4:d3ed