--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6332758060 dns-udp-queries-received-ipv6: 1206503258 dns-tcp-queries-received-ipv4: 187119887 dns-tcp-queries-received-ipv6: 35094946 dns-udp-responses-sent-ipv4: 6184533357 dns-udp-responses-sent-ipv6: 1205848044 dns-tcp-responses-sent-ipv4: 182767014 dns-tcp-responses-sent-ipv6: 35880524