--- version: rssac002v3 service: a.root-servers.net start-period: '2019-08-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6381142569 dns-udp-queries-received-ipv6: 1273565558 dns-tcp-queries-received-ipv4: 175505825 dns-tcp-queries-received-ipv6: 31884441 dns-udp-responses-sent-ipv4: 6227053178 dns-udp-responses-sent-ipv6: 1272854799 dns-tcp-responses-sent-ipv4: 170229358 dns-tcp-responses-sent-ipv6: 32710917