--- version: rssac002v4 service: a.root-servers.net start-period: '2022-05-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5091380267 dns-udp-queries-received-ipv6: 1582586001 dns-tcp-queries-received-ipv4: 325080945 dns-tcp-queries-received-ipv6: 51958763 dns-udp-responses-sent-ipv4: 4857957413 dns-udp-responses-sent-ipv6: 1580033796 dns-tcp-responses-sent-ipv4: 304824267 dns-tcp-responses-sent-ipv6: 51875475