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e.g., whoisjohnlennon.com

Whois-service.info is the service for domain check. Enter any site name you want and find out whether the domain is free or not. If the domain name is already taken by someone else, you'll see who is the domain owner and how to reach him.
To check domain more effectively use the domain "search history" option to see on one page all the domain names you?ve already tried. Use the domain registration services links to the right to buy a domain name you like.
Whois-service.info — choose domains with us.

Domains registration:

The whole list of services available: Domain search is currently available for this domain zones:
IP LOOKUP — find out information about IP-address' owner.

DNS WATCH — read the nameserver records of the site.

PING — check the site accessibility.

WHATS — explore web-server type and OS info for specified domain.

International domain zones:
.com, .net, .org, .edu, .gov, .int, .biz, .info, .aero, .coop, .mobi, .museum, .name, .law.pro, .cpa.pro, .med.pro, .tel, .xxx

National domain zones:
.us, .ca, .uk, .co.uk, .me.uk, .org.uk, .ltd.uk, .plc.uk, .de, .com.fr, .ac, .ad, .ae, .af, .ag, .ai, .ar, .as, .at, .au, .be, .br, .cc, .ch, .cn, .co, .cz, .dk, .es, .co.id, .web.id, .net.id, .ie, .il, .in, .is, .it, .jp, .li, .lu, .me, .mm, .ms, .com.mx, .my, .nl, .no, .nu, .pk, .pl, .pw, .com.py, .sa, .sc, .se, .sh, .so, .st, .sx, .tf, .th, .tk, .to, .com.tr, .tv, .tw, .vc, .ws etc.

Geographic domain zones:
.eu, .asia, .africa, .alsace, .amsterdam, .bayern, .berlin, .brussels, .koeln, .london, .miami, .moscow, .nagoya, .nyc, .okinawa, .quebec, .ruhr, .saarland, .tokyo, .wien, .yokohama etc.

New domain zones:
.academy, .actor, .app, .audio, .auto, .bike, .builders, .cab, .camera, .camp, .car, .careers, .center, .click, .clothing, .codes, .coffee, .company, .computer, .construction, .contractors, .diamonds, .directory, .domains, .education, .email, .enterprises, .equipment, .estate, .farm, .florist, .flowers, .gallery, .game, .gift, .glass, .graphics, .guru, .help, .hiphop, .link, .lol, .moda, .photo, .pub, .sexy, .social, .tattoo, .today, .vision, .watch, .zone, .xyz etc.

Russian domain names and ex-USSR zones:
.ru, .com.ru, .org.ru, .net.ru, .pp.ru, .edu.ru, .ac.ru, .int.ru, .msk.ru, .spb.ru, .ru.com, .ru.net, .su, .ua, .com.ua, .net.ua, .org.ua, .edu.ua, .gov.ua, .biz.ua, .in.ua, .kz, .by, .am, .az, .kg, .ge, .tj, .tm, .uz, .lv, .lt, .ee etc.