--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5290557986 dns-udp-queries-received-ipv6: 1131675763 dns-tcp-queries-received-ipv4: 100471734 dns-tcp-queries-received-ipv6: 18349214 dns-udp-responses-sent-ipv4: 5279788326 dns-udp-responses-sent-ipv6: 1145566160 dns-tcp-responses-sent-ipv4: 97768566 dns-tcp-responses-sent-ipv6: 17993509