--- service: a.root-servers.net start-period: '2017-02-07T00:00:00Z' end-period: '2017-02-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4716338059 dns-udp-queries-received-ipv6: 496540359 dns-tcp-queries-received-ipv4: 159280257 dns-tcp-queries-received-ipv6: 8274195 dns-udp-responses-sent-ipv4: 4710324996 dns-udp-responses-sent-ipv6: 496429508 dns-tcp-responses-sent-ipv4: 159630942 dns-tcp-responses-sent-ipv6: 8302883