--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6530937108 dns-udp-queries-received-ipv6: 1247152751 dns-tcp-queries-received-ipv4: 149327761 dns-tcp-queries-received-ipv6: 37433549 dns-udp-responses-sent-ipv4: 6441412740 dns-udp-responses-sent-ipv6: 1233466378 dns-tcp-responses-sent-ipv4: 142786519 dns-tcp-responses-sent-ipv6: 34742591