--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7441790037 dns-udp-queries-received-ipv6: 2472162551 dns-tcp-queries-received-ipv4: 466140641 dns-tcp-queries-received-ipv6: 176231160 dns-udp-responses-sent-ipv4: 6832495046 dns-udp-responses-sent-ipv6: 2036787608 dns-tcp-responses-sent-ipv4: 409392461 dns-tcp-responses-sent-ipv6: 129666407