--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3421885085 dns-udp-queries-received-ipv6: 372757713 dns-tcp-queries-received-ipv4: 114192695 dns-tcp-queries-received-ipv6: 13562684 dns-udp-responses-sent-ipv4: 3347495123 dns-udp-responses-sent-ipv6: 372147882 dns-tcp-responses-sent-ipv4: 114975989 dns-tcp-responses-sent-ipv6: 13592225