--- version: rssac002v3 service: a.root-servers.net start-period: '2019-01-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4837425644 dns-udp-queries-received-ipv6: 732647126 dns-tcp-queries-received-ipv4: 196254256 dns-tcp-queries-received-ipv6: 30095077 dns-udp-responses-sent-ipv4: 4729698540 dns-udp-responses-sent-ipv6: 732203427 dns-tcp-responses-sent-ipv4: 193310647 dns-tcp-responses-sent-ipv6: 28654303