Onecomm rhymes with:
cablecomm, caricom, chipcom, datacomm, decom, econocom, electrocom, inacom, intercom, larcom, microcom, navcom, netcom, qualcomm, scicom, sitcom, worldcom
Onecomm sounds like:
o'hanesian, ohanesian, omission, omnicom, oncogen, oncogene, onken