--- version: rssac002v3 service: a.root-servers.net start-period: '2017-06-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3996694448 dns-udp-queries-received-ipv6: 413905358 dns-tcp-queries-received-ipv4: 180564876 dns-tcp-queries-received-ipv6: 9810555 dns-udp-responses-sent-ipv4: 3984655862 dns-udp-responses-sent-ipv6: 413869337 dns-tcp-responses-sent-ipv4: 180564228 dns-tcp-responses-sent-ipv6: 9930351