--- version: rssac002v3 service: a.root-servers.net start-period: '2020-12-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 8233959525 dns-udp-queries-received-ipv6: 1551064746 dns-tcp-queries-received-ipv4: 320235363 dns-tcp-queries-received-ipv6: 105336595 dns-udp-responses-sent-ipv4: 7966674246 dns-udp-responses-sent-ipv6: 1549495925 dns-tcp-responses-sent-ipv4: 310389817 dns-tcp-responses-sent-ipv6: 105949239