--- service: j.root-servers.net start-period: '2015-05-22T00:00:00Z' end-period: '2015-05-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3540622038 dns-udp-queries-received-ipv6: 276767786 dns-tcp-queries-received-ipv4: 27955379 dns-tcp-queries-received-ipv6: 5895385 dns-udp-responses-sent-ipv4: 3468793479 dns-udp-responses-sent-ipv6: 276702816 dns-tcp-responses-sent-ipv4: 27317729 dns-tcp-responses-sent-ipv6: 5228961