--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5813427192 dns-udp-queries-received-ipv6: 1083532041 dns-tcp-queries-received-ipv4: 127685184 dns-tcp-queries-received-ipv6: 26093540 dns-udp-responses-sent-ipv4: 5737688299 dns-udp-responses-sent-ipv6: 1091022220 dns-tcp-responses-sent-ipv4: 124177248 dns-tcp-responses-sent-ipv6: 25391214