Is it ringed or rang?

Both ringed and rang are correct, but ringed is more unusual. The correct simple past tense of the irregular verb  ring meaning “cause a bell to make a sound” or “call someone on the phone” is rang.

The verb ring, meaning “encircle” or “surround” has the simple past and past participle form ringed.

You can check your grammar easily with a QuillBot grammar check.