--- service: a.root-servers.net start-period: '2016-04-14T00:00:00Z' end-period: '2016-04-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5479691278 dns-udp-queries-received-ipv6: 367189197 dns-tcp-queries-received-ipv4: 69298520 dns-tcp-queries-received-ipv6: 3476997 dns-udp-responses-sent-ipv4: 5481819024 dns-udp-responses-sent-ipv6: 366542554 dns-tcp-responses-sent-ipv4: 58569901 dns-tcp-responses-sent-ipv6: 281286