--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5788991885 dns-udp-queries-received-ipv6: 1150615804 dns-tcp-queries-received-ipv4: 283981074 dns-tcp-queries-received-ipv6: 105276067 dns-udp-responses-sent-ipv4: 5595350110 dns-udp-responses-sent-ipv6: 1149185509 dns-tcp-responses-sent-ipv4: 271949192 dns-tcp-responses-sent-ipv6: 105438707