--- version: rssac002v3 service: a.root-servers.net start-period: '2021-03-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5717163392 dns-udp-queries-received-ipv6: 1152778512 dns-tcp-queries-received-ipv4: 302843338 dns-tcp-queries-received-ipv6: 106405921 dns-udp-responses-sent-ipv4: 5526138508 dns-udp-responses-sent-ipv6: 1150956105 dns-tcp-responses-sent-ipv4: 290593065 dns-tcp-responses-sent-ipv6: 106925709