--- version: rssac002v3 service: a.root-servers.net start-period: '2019-06-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6090442788 dns-udp-queries-received-ipv6: 1036877273 dns-tcp-queries-received-ipv4: 174850535 dns-tcp-queries-received-ipv6: 36713050 dns-udp-responses-sent-ipv4: 5954706639 dns-udp-responses-sent-ipv6: 1036352891 dns-tcp-responses-sent-ipv4: 172004933 dns-tcp-responses-sent-ipv6: 37810239