--- version: rssac002v3 service: a.root-servers.net start-period: '2021-01-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6132076194 dns-udp-queries-received-ipv6: 1163646750 dns-tcp-queries-received-ipv4: 300677588 dns-tcp-queries-received-ipv6: 120462806 dns-udp-responses-sent-ipv4: 5959242780 dns-udp-responses-sent-ipv6: 1161445743 dns-tcp-responses-sent-ipv4: 288395137 dns-tcp-responses-sent-ipv6: 120935244