--- service: a.root-servers.net start-period: '2015-01-25T00:00:00Z' end-period: '2015-01-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2579965644 dns-udp-queries-received-ipv6: 203590747 dns-tcp-queries-received-ipv4: 15551958 dns-tcp-queries-received-ipv6: 2468263 dns-udp-responses-sent-ipv4: 2579075770 dns-udp-responses-sent-ipv6: 203542949 dns-tcp-responses-sent-ipv4: 14401573 dns-tcp-responses-sent-ipv6: 1618878