TheDomainKart.com is a standalone domain name register that is owned and operated by The KART Company. The KART Company is also parent owner of KARTHOST.com
When you register a domain name here at KARTHOST.com, an account is automatically created at TheDomainKart.com. For your convenience you can manage, renew, and even transfer other domains using your KARTHOST.com account. All changes you make to your domain here in the KARTHOST.com Customers Center will automatically change in your TheDomainKart.com account.
No need to login to TheDomainKart.com to renew your domains, as that will be done for you here at the KARTHOST.com Customer Center.