--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7266338334 dns-udp-queries-received-ipv6: 1345421906 dns-tcp-queries-received-ipv4: 148019055 dns-tcp-queries-received-ipv6: 34649442 dns-udp-responses-sent-ipv4: 7156297830 dns-udp-responses-sent-ipv6: 1352706766 dns-tcp-responses-sent-ipv4: 141689480 dns-tcp-responses-sent-ipv6: 31856726