--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3938968797 dns-udp-queries-received-ipv6: 328631641 dns-tcp-queries-received-ipv4: 119276148 dns-tcp-queries-received-ipv6: 13311301 dns-udp-responses-sent-ipv4: 3872528217 dns-udp-responses-sent-ipv6: 328011723 dns-tcp-responses-sent-ipv4: 118612466 dns-tcp-responses-sent-ipv6: 13331002