--- version: rssac002v4 service: a.root-servers.net start-period: '2023-05-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7160193880 dns-udp-queries-received-ipv6: 2254496753 dns-tcp-queries-received-ipv4: 448642265 dns-tcp-queries-received-ipv6: 155722992 dns-udp-responses-sent-ipv4: 6699317366 dns-udp-responses-sent-ipv6: 1961106392 dns-tcp-responses-sent-ipv4: 402776360 dns-tcp-responses-sent-ipv6: 119342389