--- service: a.root-servers.net start-period: '2016-02-09T00:00:00Z' end-period: '2016-02-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4982159087 dns-udp-queries-received-ipv6: 346982360 dns-tcp-queries-received-ipv4: 54062827 dns-tcp-queries-received-ipv6: 1977981 dns-udp-responses-sent-ipv4: 4976496863 dns-udp-responses-sent-ipv6: 347862439 dns-tcp-responses-sent-ipv4: 46140002 dns-tcp-responses-sent-ipv6: 281301