--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5941747212 dns-udp-queries-received-ipv6: 1260402803 dns-tcp-queries-received-ipv4: 282815022 dns-tcp-queries-received-ipv6: 118174069 dns-udp-responses-sent-ipv4: 5754172063 dns-udp-responses-sent-ipv6: 1258575724 dns-tcp-responses-sent-ipv4: 273738382 dns-tcp-responses-sent-ipv6: 118612418