Free tool online, whois
This is a free tool to query "who is" servers with domain name or IP address.
What is an Whois service?
This is a method for checking the informations about the ownership of a domain name. You can use the form above to try to understand who is the owner of a specific domain, or to search if a specific domain is available. You can buy a domain if it is available.
"Who is" (or "whois") is a method for make queries to databases that store the informations of the registered users or assignees of an Internet resource, such as a domain name, an IP address block or an autonomous system, but is also used for a wider range of other information.
Here is the list of all the supported domain suffixes: com, net, org, info, biz, us, uk, ca, tel, ie, it, li, no, cc, eu, nu, au, de, ws, sc, mobi, pro, edu, tv, travel, name, in, me, at, be, cn, asia, ru, ro, aero, fr, se, nl, nz, mx, tw, ch, hk, ac, ae, af, ag, al, am, as, az, ba, bg, bi, bj, br, bt, by, bz, cd, ck, cl, coop, cx, cy, cz, dk, dm, dz, ee, eg, es, fi, fo, gb, ge, gl, gm, gov, gr, gs, hm, hn, hr, hu, il, int, iq, ir, is, je, jp, kg, kr, la, lt, lu, lv, ly, ma, mc, md, mil, mk, ms, mt, mu, my, nf, pl, pr, pt, sa, sb, sg, sh, si, sk, sm, st, su, tc, tf, th, tj, tk, tl, tm, tn, to, tp, tr, ua, uy, uz, va, vc, ve, vg, yu
This whois service doesn't store informations, so you can use it freely and thoughtless.