--- service: a.root-servers.net start-period: '2015-03-02T00:00:00Z' end-period: '2015-03-02T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2880617251 dns-udp-queries-received-ipv6: 221193996 dns-tcp-queries-received-ipv4: 16444771 dns-tcp-queries-received-ipv6: 2009208 dns-udp-responses-sent-ipv4: 2862631098 dns-udp-responses-sent-ipv6: 220411792 dns-tcp-responses-sent-ipv4: 13900435 dns-tcp-responses-sent-ipv6: 1222050