--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5926530732 dns-udp-queries-received-ipv6: 1122405105 dns-tcp-queries-received-ipv4: 160918999 dns-tcp-queries-received-ipv6: 29809844 dns-udp-responses-sent-ipv4: 5795311790 dns-udp-responses-sent-ipv6: 1121824314 dns-tcp-responses-sent-ipv4: 156952460 dns-tcp-responses-sent-ipv6: 30524090