Whois Lookup is a professional domain check service, the online tool supports checking more than 58 domain zones: .com, .net, .org., .biz, .info, .io, .me, .app, .dev, .ai, .xyz, .club, .online, .site, .shop, .tech, .ru, .su, .uk, .de, .fr, .it, .es, .pt, .cn, .jp, .us, .ca, .au, .in, .br, .za, .pl, .se, .dk, .no, .fi, .hk, .sg, .my, .id, .ph, .th, .vn, .kr, .tw, .ch, .at, .be, .nl, .nz, .mx, .ar, .cl, .ve, .co, .pe, .uy.
The service is completely free, you can check your domains without restrictions, but no more than one domain every 5 seconds.