--- service: a.root-servers.net start-period: '2014-10-18T00:00:00Z' end-period: '2014-10-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2473573374 dns-udp-queries-received-ipv6: 157697781 dns-tcp-queries-received-ipv4: 15978238 dns-tcp-queries-received-ipv6: 1801020 dns-udp-responses-sent-ipv4: 2470482617 dns-udp-responses-sent-ipv6: 157642769 dns-tcp-responses-sent-ipv4: 14813489 dns-tcp-responses-sent-ipv6: 1517279