--- version: rssac002v3 service: i.root-servers.net start-period: '2019-03-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7390404738 dns-udp-queries-received-ipv6: 1343912368 dns-tcp-queries-received-ipv4: 149432051 dns-tcp-queries-received-ipv6: 34649108 dns-udp-responses-sent-ipv4: 7294074622 dns-udp-responses-sent-ipv6: 1354003911 dns-tcp-responses-sent-ipv4: 142773123 dns-tcp-responses-sent-ipv6: 31763479