I feel that "the above sentence is possible to be said like this "ところで、「００」呼び捨てでいいよ". Then, the whole sentence in English, which is meant " By the way, just call me ”.......” ・ Eg.: 私の名前桜井尤美です。ところで、「尤美」呼び捨てでいいよ。＝＞　私の名前桜井尤美です。ところで、「尤美）と呼んでください。 ※Re: I can't confirm the original question to be correct or not, so that my answer is just for a reference only if you need.

Is ころ someone's name or nickname ? If so, that would mean "Just call me ころ (without an honorific)."

ころで、doesn't make sense, ところで、I guess 呼び捨てでいいよ。 Call me Ted, call me Fred, You can call her or him by her/his first name.