Atx rhymes with:
aix, beck's, becks, blech's, caltex, checks, cmx, convex, czechs, dec's, decks, dex, eckes, ex, execs, fedex, flecks, flex, govpx, heck's, hex, jex, lex, meckes, megaplex, mex, necks, nex, nobec's, onex, peck's, perplex, plex, quebec's, rex, sex, sheck's, shek's, specks, specs, tech's, techs, teck's, tex, treks, triplex, vex, wall-tex, wrecks, x, x.
Atx sounds like:
ad's, ad-hoc, ada's, adachi, adage, adagio, adak, adas, adaza, adcock, adcox, addicks, addidas, addidas', addidas's, addidases, addis, adds, adduci, adequacy, ades, adidas, adidas's, adios, adisq, ads, ads', adss, adtec, adweek, adz, aid's, aide's, aides, aides', aidid's, aids, ataxia, ataxia's, atco, atek, ates, athas, atico, atocha, atsushi, attach, attache, attaches, attack, attacks, attic, attica, attics, atticus, attitudes, attwoods, atz, audacious, audas, audi's, audiotex, audis, audits, auto's, autodesk, autos, awaits, aytes, ayyad's