--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3769318494 dns-udp-queries-received-ipv6: 529653760 dns-tcp-queries-received-ipv4: 121722678 dns-tcp-queries-received-ipv6: 17988201 dns-udp-responses-sent-ipv4: 3649005486 dns-udp-responses-sent-ipv6: 529201302 dns-tcp-responses-sent-ipv4: 125636770 dns-tcp-responses-sent-ipv6: 18054857