--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5511745720 dns-udp-queries-received-ipv6: 1202443872 dns-tcp-queries-received-ipv4: 273029145 dns-tcp-queries-received-ipv6: 175754674 dns-udp-responses-sent-ipv4: 5116838764 dns-udp-responses-sent-ipv6: 1190308555 dns-tcp-responses-sent-ipv4: 224387326 dns-tcp-responses-sent-ipv6: 188144420