--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5560595297 dns-udp-queries-received-ipv6: 1071889157 dns-tcp-queries-received-ipv4: 118936210 dns-tcp-queries-received-ipv6: 29913340 dns-udp-responses-sent-ipv4: 5496663188 dns-udp-responses-sent-ipv6: 1075541904 dns-tcp-responses-sent-ipv4: 115375249 dns-tcp-responses-sent-ipv6: 29078248