--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5760711542 dns-udp-queries-received-ipv6: 886899643 dns-tcp-queries-received-ipv4: 152667424 dns-tcp-queries-received-ipv6: 28310810 dns-udp-responses-sent-ipv4: 5631679697 dns-udp-responses-sent-ipv6: 886428483 dns-tcp-responses-sent-ipv4: 149759677 dns-tcp-responses-sent-ipv6: 28896377