--- version: rssac002v3 service: a.root-servers.net start-period: '2019-02-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5785344213 dns-udp-queries-received-ipv6: 856885234 dns-tcp-queries-received-ipv4: 168005780 dns-tcp-queries-received-ipv6: 35538336 dns-udp-responses-sent-ipv4: 5664800757 dns-udp-responses-sent-ipv6: 856411778 dns-tcp-responses-sent-ipv4: 164377701 dns-tcp-responses-sent-ipv6: 33050646