--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4260064889 dns-udp-queries-received-ipv6: 1246565920 dns-tcp-queries-received-ipv4: 228857108 dns-tcp-queries-received-ipv6: 51985976 dns-udp-responses-sent-ipv4: 4144918884 dns-udp-responses-sent-ipv6: 1245177270 dns-tcp-responses-sent-ipv4: 226389147 dns-tcp-responses-sent-ipv6: 51933454