BSNL has implemented a new DNS or Domain Name System to provide faster internet to its broadband and Fiber-to-the-home users. The AnyCast DNS 61.1.1.1 implementation was shared by several BSNL executives on Twitter.

source https://gadgets.ndtv.com/internet/news/bsnl-implements-anycast-dns-61-1-1-1-allowing-faster-internet-browsing-for-its-customers-major-sites-youtube-google-facebook-2235377