--- service: j.root-servers.net start-period: '2015-12-30T00:00:00Z' end-period: '2015-12-30T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3463330764 dns-udp-queries-received-ipv6: 549613288 dns-tcp-queries-received-ipv4: 51095982 dns-tcp-queries-received-ipv6: 1745204 dns-udp-responses-sent-ipv4: 3440698725 dns-udp-responses-sent-ipv6: 550646771 dns-tcp-responses-sent-ipv4: 45960161 dns-tcp-responses-sent-ipv6: 265962