--- service: i.root-servers.net start-period: '2016-04-30T00:00:00Z' end-period: '2016-05-01T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4722529552 dns-udp-queries-received-ipv6: 398998555 dns-tcp-queries-received-ipv4: 28054293 dns-tcp-queries-received-ipv6: 900933 dns-udp-responses-sent-ipv4: 4679836577 dns-udp-responses-sent-ipv6: 403815618 dns-tcp-responses-sent-ipv4: 27817145 dns-tcp-responses-sent-ipv6: 904941