--- service: j.root-servers.net start-period: '2017-01-20T00:00:00Z' end-period: '2017-01-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6377314781 dns-udp-queries-received-ipv6: 647274369 dns-tcp-queries-received-ipv4: 179498772 dns-tcp-queries-received-ipv6: 16729664 dns-udp-responses-sent-ipv4: 6163454925 dns-udp-responses-sent-ipv6: 651587132 dns-tcp-responses-sent-ipv4: 167604719 dns-tcp-responses-sent-ipv6: 16855817