--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-28T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5552335986 dns-udp-queries-received-ipv6: 1194072639 dns-tcp-queries-received-ipv4: 275931203 dns-tcp-queries-received-ipv6: 126134615 dns-udp-responses-sent-ipv4: 5164124409 dns-udp-responses-sent-ipv6: 1184849464 dns-tcp-responses-sent-ipv4: 225395197 dns-tcp-responses-sent-ipv6: 124275526