--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7504825802 dns-udp-queries-received-ipv6: 1184779393 dns-tcp-queries-received-ipv4: 188230288 dns-tcp-queries-received-ipv6: 30222960 dns-udp-responses-sent-ipv4: 7277290352 dns-udp-responses-sent-ipv6: 1184270615 dns-tcp-responses-sent-ipv4: 182612107 dns-tcp-responses-sent-ipv6: 30861405