--- service: a.root-servers.net start-period: '2016-02-02T00:00:00Z' end-period: '2016-02-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3761827423 dns-udp-queries-received-ipv6: 264402832 dns-tcp-queries-received-ipv4: 43965875 dns-tcp-queries-received-ipv6: 1650162 dns-udp-responses-sent-ipv4: 3754057082 dns-udp-responses-sent-ipv6: 254696267 dns-tcp-responses-sent-ipv4: 37738862 dns-tcp-responses-sent-ipv6: 192364