I believe the frequencies being used are all the FRS ones, unless you have a GMRS license. Here is a list of the ones most two way radios have.
Name Frequency
FRS1 462.5625
FRS2 462.5875
FRS3 462.6125
FRS4 462.6375
FRS5 462.6625
FRS6 462.6875
FRS7 462.7125
FRS8 467.5625
FRS9 467.5875
FRS10 467.6125
FRS11 467.6375
FRS12 467.6625
FRS13 467.6875
FRS14 467.7125