--- service: i.root-servers.net start-period: '2016-02-14T00:00:00Z' end-period: '2016-02-15T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4229472129 dns-udp-queries-received-ipv6: 376975985 dns-tcp-queries-received-ipv4: 16330658 dns-tcp-queries-received-ipv6: 871101 dns-udp-responses-sent-ipv4: 4201092058 dns-udp-responses-sent-ipv6: 378810162 dns-tcp-responses-sent-ipv4: 16320889 dns-tcp-responses-sent-ipv6: 874898