--- service: i.root-servers.net start-period: '2013-05-03T00:00:00Z' end-period: '2013-05-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2081971560 dns-udp-queries-received-ipv6: 116862089 dns-tcp-queries-received-ipv4: 3927437 dns-tcp-queries-received-ipv6: 152098 dns-udp-responses-sent-ipv4: 2095425423 dns-udp-responses-sent-ipv6: 124514241 dns-tcp-responses-sent-ipv4: 3533902 dns-tcp-responses-sent-ipv6: 153952