--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6268241031 dns-udp-queries-received-ipv6: 1157852028 dns-tcp-queries-received-ipv4: 296655499 dns-tcp-queries-received-ipv6: 107797971 dns-udp-responses-sent-ipv4: 6087656704 dns-udp-responses-sent-ipv6: 1155442626 dns-tcp-responses-sent-ipv4: 285324686 dns-tcp-responses-sent-ipv6: 108348305