--- version: rssac002v3 service: m.root-servers.net start-period: '2019-12-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3520456578 dns-udp-queries-received-ipv6: 552591577 dns-udp-responses-sent-ipv4: 3257708271 dns-udp-responses-sent-ipv6: 521858321 dns-tcp-queries-received-ipv4: 194375384 dns-tcp-queries-received-ipv6: 72138694 dns-tcp-responses-sent-ipv4: 194372060 dns-tcp-responses-sent-ipv6: 72168435