Litecoin address starting with "m"

[franciscovn]

This valid litecoin address: "mpkJNCrTrZhv3VYcyTCi5bpY6C27tPn32N", returns false.

[larcho]

This is also returning false: "ltc1qma72rsefuzttgh26dhgacz5qw8xkf24muupnn5"

[larcho]

This valid litecoin address: "mpkJNCrTrZhv3VYcyTCi5bpY6C27tPn32N", returns false.

This by the way is a "testnet" address. Just FYI.