--- service: h.root-servers.net metric: traffic-volume start-period: '2015-06-28T00:00:00Z' end-period: '2015-06-28T23:59:59Z' dns-udp-queries-received-ipv4: 882205919 dns-udp-queries-received-ipv6: 91422000 dns-tcp-queries-received-ipv4: 131947 dns-tcp-queries-received-ipv6: 57629 dns-udp-responses-sent-ipv4: 848657867 dns-udp-responses-sent-ipv6: 85745965 dns-tcp-responses-sent-ipv4: 42681 dns-tcp-responses-sent-ipv6: 39651