--- service: h.root-servers.net metric: traffic-volume start-period: '2015-12-17T00:00:00Z' end-period: '2015-12-17T23:59:59Z' dns-udp-queries-received-ipv4: 2943400163 dns-udp-queries-received-ipv6: 247281558 dns-tcp-queries-received-ipv4: 1434161 dns-tcp-queries-received-ipv6: 345039 dns-udp-responses-sent-ipv4: 2848906977 dns-udp-responses-sent-ipv6: 247099351 dns-tcp-responses-sent-ipv4: 878869 dns-tcp-responses-sent-ipv6: 305119