--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5938265613 dns-udp-queries-received-ipv6: 1169704664 dns-tcp-queries-received-ipv4: 145681995 dns-tcp-queries-received-ipv6: 37929998 dns-udp-responses-sent-ipv4: 5846592092 dns-udp-responses-sent-ipv6: 1155020749 dns-tcp-responses-sent-ipv4: 139597116 dns-tcp-responses-sent-ipv6: 34674642