--- version: rssac002v3 service: a.root-servers.net start-period: '2021-05-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5603781344 dns-udp-queries-received-ipv6: 1255095426 dns-tcp-queries-received-ipv4: 296217464 dns-tcp-queries-received-ipv6: 126404058 dns-udp-responses-sent-ipv4: 5559301458 dns-udp-responses-sent-ipv6: 1277991821 dns-tcp-responses-sent-ipv4: 282847499 dns-tcp-responses-sent-ipv6: 126507803