--- service: i.root-servers.net start-period: '2014-01-13T00:00:00Z' end-period: '2014-01-14T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2482536344 dns-udp-queries-received-ipv6: 148589156 dns-tcp-queries-received-ipv4: 5055326 dns-tcp-queries-received-ipv6: 248308 dns-udp-responses-sent-ipv4: 2428207584 dns-udp-responses-sent-ipv6: 148759073 dns-tcp-responses-sent-ipv4: 5063481 dns-tcp-responses-sent-ipv6: 251612