--- service: b.root-servers.net start-period: 2016-06-01T00:00:00Z end-period: 2016-06-01T23:59:59Z metric: traffic-volume dns-udp-queries-received-ipv4: 2709399418 dns-udp-queries-received-ipv6: 284886546 dns-tcp-queries-received-ipv4: 46289610 dns-tcp-queries-received-ipv6: 1107508 dns-udp-responses-sent-ipv4: 2632664595 dns-udp-responses-sent-ipv6: 284321105 dns-tcp-responses-sent-ipv4: 45988661 dns-tcp-responses-sent-ipv6: 1107334