--- service: a.root-servers.net start-period: '2016-03-17T00:00:00Z' end-period: '2016-03-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5560995929 dns-udp-queries-received-ipv6: 351917283 dns-tcp-queries-received-ipv4: 75400260 dns-tcp-queries-received-ipv6: 4650047 dns-udp-responses-sent-ipv4: 5545525792 dns-udp-responses-sent-ipv6: 353106010 dns-tcp-responses-sent-ipv4: 64537366 dns-tcp-responses-sent-ipv6: 275681