--- service: j.root-servers.net start-period: '2015-12-23T00:00:00Z' end-period: '2015-12-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4313556726 dns-udp-queries-received-ipv6: 534872164 dns-tcp-queries-received-ipv4: 95068415 dns-tcp-queries-received-ipv6: 2051546 dns-udp-responses-sent-ipv4: 4190822214 dns-udp-responses-sent-ipv6: 538168298 dns-tcp-responses-sent-ipv4: 86256994 dns-tcp-responses-sent-ipv6: 269442