--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3746187360 dns-udp-queries-received-ipv6: 379485702 dns-tcp-queries-received-ipv4: 150596930 dns-tcp-queries-received-ipv6: 15075985 dns-udp-responses-sent-ipv4: 3743109143 dns-udp-responses-sent-ipv6: 379377598 dns-tcp-responses-sent-ipv4: 150908066 dns-tcp-responses-sent-ipv6: 15159000