--- service: a.root-servers.net start-period: '2016-05-14T00:00:00Z' end-period: '2016-05-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8916406345 dns-udp-queries-received-ipv6: 794076829 dns-tcp-queries-received-ipv4: 80940271 dns-tcp-queries-received-ipv6: 4542679 dns-udp-responses-sent-ipv4: 8915926826 dns-udp-responses-sent-ipv6: 793927028 dns-tcp-responses-sent-ipv4: 69083532 dns-tcp-responses-sent-ipv6: 309940