--- version: rssac002v3 service: a.root-servers.net start-period: '2019-05-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6037845093 dns-udp-queries-received-ipv6: 930251191 dns-tcp-queries-received-ipv4: 148424266 dns-tcp-queries-received-ipv6: 28832116 dns-udp-responses-sent-ipv4: 5913837464 dns-udp-responses-sent-ipv6: 929758799 dns-tcp-responses-sent-ipv4: 145340321 dns-tcp-responses-sent-ipv6: 29416933