--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5815359279 dns-udp-queries-received-ipv6: 1038496819 dns-tcp-queries-received-ipv4: 172405165 dns-tcp-queries-received-ipv6: 30508226 dns-udp-responses-sent-ipv4: 5690229351 dns-udp-responses-sent-ipv6: 1037922175 dns-tcp-responses-sent-ipv4: 168941673 dns-tcp-responses-sent-ipv6: 31181583