--- version: rssac002v3 service: j.root-servers.net start-period: '2019-04-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7501816049 dns-udp-queries-received-ipv6: 1189834513 dns-tcp-queries-received-ipv4: 615751471 dns-tcp-queries-received-ipv6: 72153814 dns-udp-responses-sent-ipv4: 6852922150 dns-udp-responses-sent-ipv6: 1145597199 dns-tcp-responses-sent-ipv4: 416024617 dns-tcp-responses-sent-ipv6: 51676929