--- service: a.root-servers.net start-period: '2016-02-04T00:00:00Z' end-period: '2016-02-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4712427707 dns-udp-queries-received-ipv6: 338700322 dns-tcp-queries-received-ipv4: 57999610 dns-tcp-queries-received-ipv6: 2193880 dns-udp-responses-sent-ipv4: 4698581361 dns-udp-responses-sent-ipv6: 339878776 dns-tcp-responses-sent-ipv4: 49993128 dns-tcp-responses-sent-ipv6: 279879