--- version: rssac002v3 service: m.root-servers.net start-period: '2019-02-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3507570285 dns-udp-queries-received-ipv6: 700665614 dns-udp-responses-sent-ipv4: 3378357105 dns-udp-responses-sent-ipv6: 673045652 dns-tcp-queries-received-ipv4: 163222534 dns-tcp-queries-received-ipv6: 37876266 dns-tcp-responses-sent-ipv4: 162988092 dns-tcp-responses-sent-ipv6: 38039868