--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5385828072 dns-udp-queries-received-ipv6: 1110386504 dns-tcp-queries-received-ipv4: 313139607 dns-tcp-queries-received-ipv6: 100638345 dns-udp-responses-sent-ipv4: 5347654925 dns-udp-responses-sent-ipv6: 1128629930 dns-tcp-responses-sent-ipv4: 293349916 dns-tcp-responses-sent-ipv6: 100771344