--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4590721757 dns-udp-queries-received-ipv6: 1293832897 dns-tcp-queries-received-ipv4: 246028334 dns-tcp-queries-received-ipv6: 38616426 dns-udp-responses-sent-ipv4: 4580756572 dns-udp-responses-sent-ipv6: 1299470526 dns-tcp-responses-sent-ipv4: 243936793 dns-tcp-responses-sent-ipv6: 38581896