--- service: j.root-servers.net start-period: '2016-07-21T00:00:00Z' end-period: '2016-07-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5689956848 dns-udp-queries-received-ipv6: 646825893 dns-tcp-queries-received-ipv4: 188177492 dns-tcp-queries-received-ipv6: 7143263 dns-udp-responses-sent-ipv4: 5592029753 dns-udp-responses-sent-ipv6: 652446727 dns-tcp-responses-sent-ipv4: 147369637 dns-tcp-responses-sent-ipv6: 4049021