--- service: h.root-servers.net metric: traffic-volume start-period: '2015-06-30T00:00:00Z' end-period: '2015-06-30T23:59:59Z' dns-udp-queries-received-ipv4: 862555096 dns-udp-queries-received-ipv6: 81177123 dns-tcp-queries-received-ipv4: 127785 dns-tcp-queries-received-ipv6: 45994 dns-udp-responses-sent-ipv4: 804541671 dns-udp-responses-sent-ipv6: 74724937 dns-tcp-responses-sent-ipv4: 41276 dns-tcp-responses-sent-ipv6: 30328