--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-15T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5905232329 dns-udp-queries-received-ipv6: 1257410131 dns-tcp-queries-received-ipv4: 281781673 dns-tcp-queries-received-ipv6: 92043296 dns-udp-responses-sent-ipv4: 5746420079 dns-udp-responses-sent-ipv6: 1255531551 dns-tcp-responses-sent-ipv4: 271955623 dns-tcp-responses-sent-ipv6: 92493358