--- service: a.root-servers.net start-period: '2014-09-20T00:00:00Z' end-period: '2014-09-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2233277025 dns-udp-queries-received-ipv6: 157218021 dns-tcp-queries-received-ipv4: 15793075 dns-tcp-queries-received-ipv6: 1556435 dns-udp-responses-sent-ipv4: 2233760079 dns-udp-responses-sent-ipv6: 157195331 dns-tcp-responses-sent-ipv4: 15240505 dns-tcp-responses-sent-ipv6: 1094106