--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-29T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5924716921 dns-udp-queries-received-ipv6: 421538049 dns-tcp-queries-received-ipv4: 111238531 dns-tcp-queries-received-ipv6: 15783525 dns-udp-responses-sent-ipv4: 5840379235 dns-udp-responses-sent-ipv6: 421162727 dns-tcp-responses-sent-ipv4: 113187595 dns-tcp-responses-sent-ipv6: 15834521