--- service: a.root-servers.net start-period: '2014-07-30T00:00:00Z' end-period: '2014-07-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1789359634 dns-udp-queries-received-ipv6: 117678511 dns-tcp-queries-received-ipv4: 15410278 dns-tcp-queries-received-ipv6: 1033038 dns-udp-responses-sent-ipv4: 1789297185 dns-udp-responses-sent-ipv6: 117691143 dns-tcp-responses-sent-ipv4: 15680959 dns-tcp-responses-sent-ipv6: 393910