--- service: i.root-servers.net start-period: '2015-02-07T00:00:00Z' end-period: '2015-02-08T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3115511698 dns-udp-queries-received-ipv6: 242396550 dns-tcp-queries-received-ipv4: 6201689 dns-tcp-queries-received-ipv6: 170769 dns-udp-responses-sent-ipv4: 3070694289 dns-udp-responses-sent-ipv6: 242349970 dns-tcp-responses-sent-ipv4: 6248247 dns-tcp-responses-sent-ipv6: 175577