--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5966202225 dns-udp-queries-received-ipv6: 1074535985 dns-tcp-queries-received-ipv4: 175501246 dns-tcp-queries-received-ipv6: 36750046 dns-udp-responses-sent-ipv4: 5831330892 dns-udp-responses-sent-ipv6: 1073928954 dns-tcp-responses-sent-ipv4: 172795029 dns-tcp-responses-sent-ipv6: 37814763