--- version: rssac002v4 service: a.root-servers.net start-period: '2022-04-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4775292378 dns-udp-queries-received-ipv6: 1364925963 dns-tcp-queries-received-ipv4: 265793302 dns-tcp-queries-received-ipv6: 48868631 dns-udp-responses-sent-ipv4: 4753891420 dns-udp-responses-sent-ipv6: 1371196870 dns-tcp-responses-sent-ipv4: 261853084 dns-tcp-responses-sent-ipv6: 48904935