--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4565584155 dns-udp-queries-received-ipv6: 1371550083 dns-tcp-queries-received-ipv4: 265345137 dns-tcp-queries-received-ipv6: 69170655 dns-udp-responses-sent-ipv4: 4609870147 dns-udp-responses-sent-ipv6: 1374531727 dns-tcp-responses-sent-ipv4: 261769855 dns-tcp-responses-sent-ipv6: 69177494