--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6335107601 dns-udp-queries-received-ipv6: 1331247641 dns-tcp-queries-received-ipv4: 146925558 dns-tcp-queries-received-ipv6: 33958479 dns-udp-responses-sent-ipv4: 6292989613 dns-udp-responses-sent-ipv6: 1326052177 dns-tcp-responses-sent-ipv4: 141327374 dns-tcp-responses-sent-ipv6: 30851640