--- service: i.root-servers.net start-period: '2015-02-17T00:00:00Z' end-period: '2015-02-18T00:00:11Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3255247277 dns-udp-queries-received-ipv6: 263206505 dns-tcp-queries-received-ipv4: 6693187 dns-tcp-queries-received-ipv6: 195855 dns-udp-responses-sent-ipv4: 3205477931 dns-udp-responses-sent-ipv6: 263153132 dns-tcp-responses-sent-ipv4: 6727473 dns-tcp-responses-sent-ipv6: 205964