--- service: j.root-servers.net start-period: '2017-01-23T00:00:00Z' end-period: '2017-01-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6328558011 dns-udp-queries-received-ipv6: 624961558 dns-tcp-queries-received-ipv4: 192007037 dns-tcp-queries-received-ipv6: 12388746 dns-udp-responses-sent-ipv4: 6198392388 dns-udp-responses-sent-ipv6: 629115331 dns-tcp-responses-sent-ipv4: 176125922 dns-tcp-responses-sent-ipv6: 12527185