--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5175148039 dns-udp-queries-received-ipv6: 1398570306 dns-tcp-queries-received-ipv4: 278625325 dns-tcp-queries-received-ipv6: 52537050 dns-udp-responses-sent-ipv4: 5334592526 dns-udp-responses-sent-ipv6: 1419954494 dns-tcp-responses-sent-ipv4: 276096299 dns-tcp-responses-sent-ipv6: 52652191