Jio Fiber on Top Spot in Netflix ISP Speed Index; BSNL, MTNL Disappoint Airtel XStream Fiber, Tata Sky Broadband, and ACT Fibernet all offered 3.6Mbps average speed in November and December last year. By Tasneem Akolawala | Updated: 13 January 2021 18:33 IST JioFiber offered an average speed of 3.8Mbps in both November and December Highlights MTNL offered an average speed of 2.4Mbps in December Netflix ISP Speed Index has a new measurement system in place Netflix revamped its ISP Speed Index website after several months of inactivity, and it reflects the last six months' results, with Jio Fiber leading the charts last month. Jio Fiber achieved an average speed of 3.8Mbps in December 2020, with other Internet service providers (ISPs) like 7 Star Digital, Airtel Xstream Fiber, ACT Fibernet and Tata Sky Broadband following suit. Netflix has updated its ISP Speed Index site with a new look. The company says that the index is calculated with a new performance measurement to make it compatible with the changing streaming and encoding landscape.