--- version: rssac002v4 service: a.root-servers.net start-period: '2022-05-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5072374622 dns-udp-queries-received-ipv6: 1639935547 dns-tcp-queries-received-ipv4: 294253848 dns-tcp-queries-received-ipv6: 54562987 dns-udp-responses-sent-ipv4: 4919959176 dns-udp-responses-sent-ipv6: 1646315077 dns-tcp-responses-sent-ipv4: 275653151 dns-tcp-responses-sent-ipv6: 54605974