--- version: rssac002v3 service: b.root-servers.net start-period: 2019-02-13T00:00:00Z metric: traffic-volume dns-udp-queries-received-ipv4: 3661765409 dns-udp-queries-received-ipv6: 540313407 dns-tcp-queries-received-ipv4: 192332895 dns-tcp-queries-received-ipv6: 23473842 dns-udp-responses-sent-ipv4: 3435942977 dns-udp-responses-sent-ipv6: 539735308 dns-tcp-responses-sent-ipv4: 192200196 dns-tcp-responses-sent-ipv6: 23458742