--- version: rssac002v3 service: b.root-servers.net start-period: 2019-07-27T00:00:00Z metric: traffic-volume dns-udp-queries-received-ipv4: 3030847431 dns-udp-queries-received-ipv6: 490634235 dns-tcp-queries-received-ipv4: 252469269 dns-tcp-queries-received-ipv6: 30895956 dns-udp-responses-sent-ipv4: 2744811636 dns-udp-responses-sent-ipv6: 490496191 dns-tcp-responses-sent-ipv4: 252451522 dns-tcp-responses-sent-ipv6: 30910777