--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6062903528 dns-udp-queries-received-ipv6: 1061779366 dns-tcp-queries-received-ipv4: 133340195 dns-tcp-queries-received-ipv6: 27822062 dns-udp-responses-sent-ipv4: 5978031766 dns-udp-responses-sent-ipv6: 1070066978 dns-tcp-responses-sent-ipv4: 129645984 dns-tcp-responses-sent-ipv6: 27155835