--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5148619968 dns-udp-queries-received-ipv6: 1648274007 dns-tcp-queries-received-ipv4: 307949598 dns-tcp-queries-received-ipv6: 156479310 dns-udp-responses-sent-ipv4: 5191352107 dns-udp-responses-sent-ipv6: 1651375353 dns-tcp-responses-sent-ipv4: 305611492 dns-tcp-responses-sent-ipv6: 156446851