--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5136013149 dns-udp-queries-received-ipv6: 1470606146 dns-tcp-queries-received-ipv4: 275079350 dns-tcp-queries-received-ipv6: 53820148 dns-udp-responses-sent-ipv4: 4962894575 dns-udp-responses-sent-ipv6: 1468817326 dns-tcp-responses-sent-ipv4: 266449873 dns-tcp-responses-sent-ipv6: 53877327