--- service: a.root-servers.net start-period: '2017-01-29T00:00:00Z' end-period: '2017-01-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4106832007 dns-udp-queries-received-ipv6: 432023767 dns-tcp-queries-received-ipv4: 134540201 dns-tcp-queries-received-ipv6: 7170041 dns-udp-responses-sent-ipv4: 4101760533 dns-udp-responses-sent-ipv6: 431874464 dns-tcp-responses-sent-ipv4: 135034273 dns-tcp-responses-sent-ipv6: 7167142