--- service: a.root-servers.net start-period: '2015-11-27T00:00:00Z' end-period: '2015-11-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3619830998 dns-udp-queries-received-ipv6: 301779041 dns-tcp-queries-received-ipv4: 29604112 dns-tcp-queries-received-ipv6: 2023122 dns-udp-responses-sent-ipv4: 3961201024 dns-udp-responses-sent-ipv6: 303547496 dns-tcp-responses-sent-ipv4: 24959321 dns-tcp-responses-sent-ipv6: 276457