Shiprocket has filed a confidential draft red herring prospectus with SEBI for its proposed IPO to raise Rs 2,000-2,500 crore.The IPO includes both fresh issue of shares and an offer for sale component by existing investors.Backed by Zomato and Temasek, Shiprocket offers ecommerce enablement services and plans to use the IPO funds for expansion.To facilitate the IPO, Shiprocket has appointed Axis Capital, Kotak Mahindra Capital, JM Financial, and Bank of America as its lead managers.