--- version: rssac002v3 service: a.root-servers.net start-period: '2017-09-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4579415517 dns-udp-queries-received-ipv6: 421496516 dns-tcp-queries-received-ipv4: 148123297 dns-tcp-queries-received-ipv6: 10864507 dns-udp-responses-sent-ipv4: 4568893985 dns-udp-responses-sent-ipv6: 421303613 dns-tcp-responses-sent-ipv4: 147932744 dns-tcp-responses-sent-ipv6: 10963149