The most members online in one day was 677, 10-19-2010.
123toilaai, 20chai0say, 8lina, aaiphuonguyen20123, absomascalp, aidudayday, aihientc, alxvn04, alxvn05, alxvn06, anhmanh9992, anhtungzz, antienco3, ao1thun08, aotohanoi2011, avatarhd012, bandathuenh2, banledt, bdsanhung1980, bdsanhung19811, bdsanhung198x, bebeto1102, bill, bking001, boyhi17, BTKTnet.com, bugati001, bushing01, cado19812, cado1983, cado2217, cautams2, chitchoat, chocorione, choiavatar81, Choosey Girl, chothuexecuoi, chungIP, cleviscvl, clubfly1, conduitbox, congki199x, connector00, daiphuhung112, dai_ca_ca, damme1193, danchoi_lck, dangkymang2222, dangtin_2012, dataentryvn14, dautuhuul, ddcntvn, dddvietnam, delete8x0, den888, dienmayso, dinhtriet131107, do.letinh, doigiay111, doigoitentoi, domainesc, donghoo, doremon317, dragonball, DuaTop_VietNamNet, durian001, F1devill, fpthpphongbn, gameakiet, gameanthua, gaoblackxinchao9, giaima_mb1, giangatong_lc, haccolong, harry.hunters, hoacai577, hoacutlon, hoangtronghl, honghanhvic20, hoyeugame, hpmuaban2012, hun90022, inetryconydot, ketoandn, ketoan_ntc_0907241381, khanhnd77, khngkhai76, kiennguyen2492, kietpro534, lamdung, lamgiang, lamkientk, lamtinh99a, lddung, leal230792, lephu21, locknut01, luan1011, luckystarsaodem, LVBNKTSG, lvhoa1110, maitrungthai, manhhung0909c, manhvip, mid102, mid103, minhtuvicland2, muaban24, muareonline, mytutcd, myxuanktc, myxuansgtn, namchoon, namhaivn123, napmucinhh, ngamit, nguyenal999, nguyenanh2505, nguyenhung8734, nguyenlam14990, NikolasTesla, PenBeinOKig, phatdat113, phatdat114, phatdat115, phatdat116, phatdat222, phatdat223, phatdat224, phatdat225, phattrien-giabao, phohoang, phuong254, phuongnh, phuthizzz, pipehanger1, quangcao006, RichardMaretti, saaamoon, saigonzz01, saleall03, sanganp, saoviet.esc, seodot3vn, sevendesign, shopphukien.tk, simsodepvn1386, strutclampcvl, sua_may_in, taidddd, taikhoanaz, tanlocmedia1386, tdthinhqn, teamsales05, teeconduit, thaiphatthinh1, thangss11342112, thanhhongtb, thanhlapct, thaoduocmethi, thaoedu88, ThầnĐiêuĐạiHiệp, thinhbabylon4, thinttc, thnhanvip, thomkt, thuhoahau, thuyentctt, titeoo012, titeoo015, trieulinh01, trunking01, truyetmaaii, tuanvubtp, tuthanden88923, tuvanct, tuvandn, tuvanhonnhan, tuvanlaw, tuvanpl, tuyensinh2011.net, tvhonnhan, vanancorp.vn, vanhue41, vesaumuadong, vietcom01, vietcom85, vietthai17aa, vinahmot, vitanbinhpro, vuithugian, vuong89nem, webbanre, Webgame, winsieutoc, xenh, xuanle87, yhvhphh, zjn_zjn_01

The most registrations in one day was 513, 10-19-2010.
BTKTnet.com, bugati001, cautams2, clubfly1, congki199x, damme1193, dataentryvn14, ddcntvn, doigoitentoi, domainesc, dragonball, F1devill, haccolong, harry.hunters, hoacai577, hoacutlon, honghanhvic20, hpmuaban2012, khanhnd77, kietpro534, lamdung, lamgiang, lamkientk, luan1011, LVBNKTSG, mid103, muaban24, myxuanktc, napmucinhh, phattrien-giabao, phuong254, shopphukien.tk, taidddd, taikhoanaz, thaiphatthinh1, thinttc, thuyentctt, titeoo015, tuanvubtp, tuthanden88923, vanancorp.vn, vitanbinhpro, xenh