--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5727631932 dns-udp-queries-received-ipv6: 1126968597 dns-tcp-queries-received-ipv4: 285054489 dns-tcp-queries-received-ipv6: 120306235 dns-udp-responses-sent-ipv4: 5541850086 dns-udp-responses-sent-ipv6: 1125535195 dns-tcp-responses-sent-ipv4: 275548931 dns-tcp-responses-sent-ipv6: 120525448