--- service: a.root-servers.net start-period: '2016-03-28T00:00:00Z' end-period: '2016-03-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5787932202 dns-udp-queries-received-ipv6: 355612610 dns-tcp-queries-received-ipv4: 151835465 dns-tcp-queries-received-ipv6: 3164696 dns-udp-responses-sent-ipv4: 5779555431 dns-udp-responses-sent-ipv6: 356600348 dns-tcp-responses-sent-ipv4: 104210214 dns-tcp-responses-sent-ipv6: 277209