--- service: i.root-servers.net start-period: '2015-07-08T00:00:00Z' end-period: '2015-07-08T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3899084440 dns-udp-queries-received-ipv6: 271222134 dns-tcp-queries-received-ipv4: 11358057 dns-tcp-queries-received-ipv6: 280243 dns-udp-responses-sent-ipv4: 3848410931 dns-udp-responses-sent-ipv6: 273493160 dns-tcp-responses-sent-ipv4: 11247477 dns-tcp-responses-sent-ipv6: 280557