--- version: rssac002v3 service: i.root-servers.net start-period: '2019-05-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6317470484 dns-udp-queries-received-ipv6: 1330145009 dns-tcp-queries-received-ipv4: 119447903 dns-tcp-queries-received-ipv6: 26519037 dns-udp-responses-sent-ipv4: 6201275000 dns-udp-responses-sent-ipv6: 1327062317 dns-tcp-responses-sent-ipv4: 114840600 dns-tcp-responses-sent-ipv6: 25478180