--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6348020112 dns-udp-queries-received-ipv6: 1143302903 dns-tcp-queries-received-ipv4: 174058246 dns-tcp-queries-received-ipv6: 32466972 dns-udp-responses-sent-ipv4: 6214147427 dns-udp-responses-sent-ipv6: 1142155489 dns-tcp-responses-sent-ipv4: 170560428 dns-tcp-responses-sent-ipv6: 33331325