--- version: rssac002v3 service: i.root-servers.net start-period: '2017-12-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5328658552 dns-udp-queries-received-ipv6: 620757437 dns-tcp-queries-received-ipv4: 90550637 dns-tcp-queries-received-ipv6: 13027560 dns-udp-responses-sent-ipv4: 5393216337 dns-udp-responses-sent-ipv6: 623065319 dns-tcp-responses-sent-ipv4: 91350844 dns-tcp-responses-sent-ipv6: 13045451