--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6448070179 dns-udp-queries-received-ipv6: 1223536697 dns-tcp-queries-received-ipv4: 178084713 dns-tcp-queries-received-ipv6: 33518596 dns-udp-responses-sent-ipv4: 6299961530 dns-udp-responses-sent-ipv6: 1222593433 dns-tcp-responses-sent-ipv4: 173645762 dns-tcp-responses-sent-ipv6: 34522663