--- version: rssac002v4 service: a.root-servers.net start-period: '2023-05-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7158400944 dns-udp-queries-received-ipv6: 2025558887 dns-tcp-queries-received-ipv4: 451302131 dns-tcp-queries-received-ipv6: 159850363 dns-udp-responses-sent-ipv4: 6716684760 dns-udp-responses-sent-ipv6: 1741726529 dns-tcp-responses-sent-ipv4: 403780723 dns-tcp-responses-sent-ipv6: 126159809