--- service: a.root-servers.net start-period: '2014-01-22T00:00:00Z' end-period: '2014-01-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1411477361 dns-udp-queries-received-ipv6: 50321628 dns-tcp-queries-received-ipv4: 7861869 dns-tcp-queries-received-ipv6: 1095256 dns-udp-responses-sent-ipv4: 1410136669 dns-udp-responses-sent-ipv6: 50297029 dns-tcp-responses-sent-ipv4: 7853705 dns-tcp-responses-sent-ipv6: 65