--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5930841300 dns-udp-queries-received-ipv6: 1132748077 dns-tcp-queries-received-ipv4: 288239311 dns-tcp-queries-received-ipv6: 114047369 dns-udp-responses-sent-ipv4: 5760459822 dns-udp-responses-sent-ipv6: 1130548668 dns-tcp-responses-sent-ipv4: 277130318 dns-tcp-responses-sent-ipv6: 114429024