--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7156113897 dns-udp-queries-received-ipv6: 1398634401 dns-tcp-queries-received-ipv4: 144108566 dns-tcp-queries-received-ipv6: 33960767 dns-udp-responses-sent-ipv4: 7026016276 dns-udp-responses-sent-ipv6: 1387832471 dns-tcp-responses-sent-ipv4: 137385647 dns-tcp-responses-sent-ipv6: 30674346