--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6793828025 dns-udp-queries-received-ipv6: 1225462304 dns-tcp-queries-received-ipv4: 224246291 dns-tcp-queries-received-ipv6: 35858881 dns-udp-responses-sent-ipv4: 6624398010 dns-udp-responses-sent-ipv6: 1224756585 dns-tcp-responses-sent-ipv4: 218570222 dns-tcp-responses-sent-ipv6: 36659996