--- version: rssac002v3 service: a.root-servers.net start-period: '2018-08-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3649454494 dns-udp-queries-received-ipv6: 529228669 dns-tcp-queries-received-ipv4: 111327520 dns-tcp-queries-received-ipv6: 21469574 dns-udp-responses-sent-ipv4: 3549566237 dns-udp-responses-sent-ipv6: 528883325 dns-tcp-responses-sent-ipv4: 106509349 dns-tcp-responses-sent-ipv6: 21527442