--- version: rssac002v3 service: a.root-servers.net start-period: '2021-06-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5456391793 dns-udp-queries-received-ipv6: 1503204273 dns-tcp-queries-received-ipv4: 299100124 dns-tcp-queries-received-ipv6: 131935977 dns-udp-responses-sent-ipv4: 5294072125 dns-udp-responses-sent-ipv6: 1469347346 dns-tcp-responses-sent-ipv4: 289585604 dns-tcp-responses-sent-ipv6: 125935404