--- version: rssac002v3 service: m.root-servers.net start-period: '2019-06-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4029111752 dns-udp-queries-received-ipv6: 956527123 dns-udp-responses-sent-ipv4: 3878107664 dns-udp-responses-sent-ipv6: 852976417 dns-tcp-queries-received-ipv4: 236747933 dns-tcp-queries-received-ipv6: 61896296 dns-tcp-responses-sent-ipv4: 236840289 dns-tcp-responses-sent-ipv6: 62096132