--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6861743537 dns-udp-queries-received-ipv6: 1228901821 dns-tcp-queries-received-ipv4: 206199676 dns-tcp-queries-received-ipv6: 36320086 dns-udp-responses-sent-ipv4: 6692339488 dns-udp-responses-sent-ipv6: 1228219536 dns-tcp-responses-sent-ipv4: 202261473 dns-tcp-responses-sent-ipv6: 37155150