--- version: rssac002v3 service: j.root-servers.net start-period: '2018-07-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5523788572 dns-udp-queries-received-ipv6: 540391844 dns-tcp-queries-received-ipv4: 271752067 dns-tcp-queries-received-ipv6: 17861534 dns-udp-responses-sent-ipv4: 5319172903 dns-udp-responses-sent-ipv6: 456485197 dns-tcp-responses-sent-ipv4: 214666210 dns-tcp-responses-sent-ipv6: 18027091