--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4036969769 dns-udp-queries-received-ipv6: 629640513 dns-tcp-queries-received-ipv4: 113344408 dns-tcp-queries-received-ipv6: 20065049 dns-udp-responses-sent-ipv4: 3933703769 dns-udp-responses-sent-ipv6: 629136512 dns-tcp-responses-sent-ipv4: 109324274 dns-tcp-responses-sent-ipv6: 20082300