--- version: rssac002v3 service: b.root-servers.net start-period: 2019-02-20T00:00:00Z metric: traffic-volume dns-udp-queries-received-ipv4: 3779090791 dns-udp-queries-received-ipv6: 523329104 dns-tcp-queries-received-ipv4: 172796673 dns-tcp-queries-received-ipv6: 23836983 dns-udp-responses-sent-ipv4: 3580856179 dns-udp-responses-sent-ipv6: 523303729 dns-tcp-responses-sent-ipv4: 172705307 dns-tcp-responses-sent-ipv6: 23819658