--- version: rssac002v3 service: a.root-servers.net start-period: '2021-04-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4760471995 dns-udp-queries-received-ipv6: 1035700601 dns-tcp-queries-received-ipv4: 276349558 dns-tcp-queries-received-ipv6: 99719028 dns-udp-responses-sent-ipv4: 4711396331 dns-udp-responses-sent-ipv6: 1049616119 dns-tcp-responses-sent-ipv4: 265870802 dns-tcp-responses-sent-ipv6: 99841697