--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6330060223 dns-udp-queries-received-ipv6: 1149202985 dns-tcp-queries-received-ipv4: 178801709 dns-tcp-queries-received-ipv6: 33333612 dns-udp-responses-sent-ipv4: 6176000497 dns-udp-responses-sent-ipv6: 1148113497 dns-tcp-responses-sent-ipv4: 174182069 dns-tcp-responses-sent-ipv6: 34248824