--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5437063441 dns-udp-queries-received-ipv6: 880069594 dns-tcp-queries-received-ipv4: 174682041 dns-tcp-queries-received-ipv6: 28499052 dns-udp-responses-sent-ipv4: 5320023769 dns-udp-responses-sent-ipv6: 878404089 dns-tcp-responses-sent-ipv4: 171474574 dns-tcp-responses-sent-ipv6: 29170355