--- version: rssac002v3 service: a.root-servers.net start-period: '2021-10-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4591786022 dns-udp-queries-received-ipv6: 1132894888 dns-tcp-queries-received-ipv4: 289027741 dns-tcp-queries-received-ipv6: 69110615 dns-udp-responses-sent-ipv4: 4452383226 dns-udp-responses-sent-ipv6: 1131208503 dns-tcp-responses-sent-ipv4: 286171294 dns-tcp-responses-sent-ipv6: 69552758