--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4702882474 dns-udp-queries-received-ipv6: 1238907710 dns-tcp-queries-received-ipv4: 278606645 dns-tcp-queries-received-ipv6: 74237326 dns-udp-responses-sent-ipv4: 4693976787 dns-udp-responses-sent-ipv6: 1245290032 dns-tcp-responses-sent-ipv4: 275359466 dns-tcp-responses-sent-ipv6: 74073156