--- version: rssac002v3 service: i.root-servers.net start-period: '2019-01-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6428793169 dns-udp-queries-received-ipv6: 1170696049 dns-tcp-queries-received-ipv4: 152764197 dns-tcp-queries-received-ipv6: 38744546 dns-udp-responses-sent-ipv4: 6332424145 dns-udp-responses-sent-ipv6: 1160100759 dns-tcp-responses-sent-ipv4: 145883072 dns-tcp-responses-sent-ipv6: 36171418