--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7564347055 dns-udp-queries-received-ipv6: 1395252024 dns-tcp-queries-received-ipv4: 145549383 dns-tcp-queries-received-ipv6: 36413268 dns-udp-responses-sent-ipv4: 7616605885 dns-udp-responses-sent-ipv6: 1412459986 dns-tcp-responses-sent-ipv4: 139665809 dns-tcp-responses-sent-ipv6: 33381209