--- service: i.root-servers.net start-period: '2014-04-16T00:00:00Z' end-period: '2014-04-17T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3304249922 dns-udp-queries-received-ipv6: 194929199 dns-tcp-queries-received-ipv4: 6598227 dns-tcp-queries-received-ipv6: 253190 dns-udp-responses-sent-ipv4: 3241666248 dns-udp-responses-sent-ipv6: 195304018 dns-tcp-responses-sent-ipv4: 6615226 dns-tcp-responses-sent-ipv6: 254839