--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7670544413 dns-udp-queries-received-ipv6: 1773977004 dns-tcp-queries-received-ipv4: 314010483 dns-tcp-queries-received-ipv6: 142957049 dns-udp-responses-sent-ipv4: 7465260778 dns-udp-responses-sent-ipv6: 1772474415 dns-tcp-responses-sent-ipv4: 299207629 dns-tcp-responses-sent-ipv6: 143418655