--- version: rssac002v4 service: a.root-servers.net start-period: '2022-06-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5489254441 dns-udp-queries-received-ipv6: 1552917859 dns-tcp-queries-received-ipv4: 363690713 dns-tcp-queries-received-ipv6: 56465968 dns-udp-responses-sent-ipv4: 5237102616 dns-udp-responses-sent-ipv6: 1551468156 dns-tcp-responses-sent-ipv4: 304711360 dns-tcp-responses-sent-ipv6: 56600052