--- service: a.root-servers.net start-period: '2016-01-06T00:00:00Z' end-period: '2016-01-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4929010549 dns-udp-queries-received-ipv6: 261261178 dns-tcp-queries-received-ipv4: 60456473 dns-tcp-queries-received-ipv6: 1871286 dns-udp-responses-sent-ipv4: 4924973460 dns-udp-responses-sent-ipv6: 262151724 dns-tcp-responses-sent-ipv4: 51615355 dns-tcp-responses-sent-ipv6: 205692