WRTF674

Hi everyone, I'm new here and to the whole GMRS world. I just got my radios and my license and Im starting to play around with them. My question is, can GMRS radios only hook in to repeaters that start with 462 or 467? There are multiple repeaters around my area and areas I wish to explore from an internet search but they all start with the 100's and 200's. Are those repeaters HAM repeaters? Thank you, Im sure this is a simple question just trying to learn this new adventure.