--- version: rssac002v3 service: a.root-servers.net start-period: '2021-02-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5187378091 dns-udp-queries-received-ipv6: 1080780993 dns-tcp-queries-received-ipv4: 265654715 dns-tcp-queries-received-ipv6: 109535962 dns-udp-responses-sent-ipv4: 5013993436 dns-udp-responses-sent-ipv6: 1079310066 dns-tcp-responses-sent-ipv4: 255461250 dns-tcp-responses-sent-ipv6: 109620511