--- service: a.root-servers.net start-period: '2015-10-10T00:00:00Z' end-period: '2015-10-10T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2697027317 dns-udp-queries-received-ipv6: 273854786 dns-tcp-queries-received-ipv4: 18015579 dns-tcp-queries-received-ipv6: 6941128 dns-udp-responses-sent-ipv4: 2696446393 dns-udp-responses-sent-ipv6: 273666274 dns-tcp-responses-sent-ipv4: 15792970 dns-tcp-responses-sent-ipv6: 5367867