--- version: rssac002v3 service: a.root-servers.net start-period: '2019-07-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5836362767 dns-udp-queries-received-ipv6: 1103976893 dns-tcp-queries-received-ipv4: 162818361 dns-tcp-queries-received-ipv6: 31353068 dns-udp-responses-sent-ipv4: 5699509889 dns-udp-responses-sent-ipv6: 1103074661 dns-tcp-responses-sent-ipv4: 157628648 dns-tcp-responses-sent-ipv6: 32155094