--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-04T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7216134087 dns-udp-queries-received-ipv6: 2331342404 dns-tcp-queries-received-ipv4: 481495296 dns-tcp-queries-received-ipv6: 143833875 dns-udp-responses-sent-ipv4: 6568343109 dns-udp-responses-sent-ipv6: 1921448418 dns-tcp-responses-sent-ipv4: 407008746 dns-tcp-responses-sent-ipv6: 107411338