No. Although we will set up your hosting account immediately (absent any billing or payment problems), it sometimes takes approximately 2 to 24 hours for the DNS to resolve to our servers after the DNS information is set.
Further if your domain is registered elsewhere and you are only ordering a hosting plan, you must login at your own domain registrar and make the DNS/name server changes manually, using the name server information we provide, in the Welcome Email sent to you from Mumbai Hosting.
If you need assistance to make the changes, please feel free to open a support ticket from your authorsed client area, requesting this change.