--- service: a.root-servers.net start-period: '2016-12-02T00:00:00Z' end-period: '2016-12-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5399231298 dns-udp-queries-received-ipv6: 468633137 dns-tcp-queries-received-ipv4: 220428226 dns-tcp-queries-received-ipv6: 7920655 dns-udp-responses-sent-ipv4: 5379578007 dns-udp-responses-sent-ipv6: 468139679 dns-tcp-responses-sent-ipv4: 221716718 dns-tcp-responses-sent-ipv6: 7947007