The Speed Post tracking number format is usually comprised of 2 alphabetic characters, 9 numeric characters, and 2 alphabetic characters. 

Speed Post tracking number format:

2 letters + 9 digits + 2 letters

Speed Post tracking number example:

PP524765483IN

PP829763377IN

EA177587320IN

EO868613184IN

EM054389102IN

Speed post is one of the services of India Post. There are two types of it, Domestic Speed Post and International Speed Post. As the market leader in the domestic express industry in India, Domestic Speed Post provides express and time-bound delivery of letters and parcels weighing up to 35 kg with its widest network. The International Speed Post can be booked in almost every India Post office. In major cities, you can book this service even it's really late, which provides convenience to customers. 

You can also track your Speed Post tracking number on trackingmore.com