--- version: rssac002v3 service: i.root-servers.net start-period: '2018-01-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4730870812 dns-udp-queries-received-ipv6: 639207053 dns-tcp-queries-received-ipv4: 87578236 dns-tcp-queries-received-ipv6: 12800015 dns-udp-responses-sent-ipv4: 4818445357 dns-udp-responses-sent-ipv6: 637732446 dns-tcp-responses-sent-ipv4: 87766899 dns-tcp-responses-sent-ipv6: 12786470