--- version: rssac002v3 service: i.root-servers.net start-period: '2019-04-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6952498011 dns-udp-queries-received-ipv6: 1300188509 dns-tcp-queries-received-ipv4: 126695059 dns-tcp-queries-received-ipv6: 29746949 dns-udp-responses-sent-ipv4: 6864987959 dns-udp-responses-sent-ipv6: 1316133231 dns-tcp-responses-sent-ipv4: 122076478 dns-tcp-responses-sent-ipv6: 28387023