--- service: a.root-servers.net start-period: '2014-12-17T00:00:00Z' end-period: '2014-12-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2887199721 dns-udp-queries-received-ipv6: 197913550 dns-tcp-queries-received-ipv4: 15252779 dns-tcp-queries-received-ipv6: 2438735 dns-udp-responses-sent-ipv4: 2886093752 dns-udp-responses-sent-ipv6: 197877844 dns-tcp-responses-sent-ipv4: 13947032 dns-tcp-responses-sent-ipv6: 1618755