A consignment number is a unique number allotted to every parcel that is sent through India Posts Speed Post service. It is a 13-digit code that is a combination of alphabets and numbers. The consignment number is printed on the receipt that you receive after acceptance of the consignment for Speed Post. You can use this number to track the status or location of your parcel online via the India Post website. To track your parcel, you need to visit the official page of India Post and enter the consignment number in the required field. The tracking system is updated regularly to provide accurate information about the status of your parcel.