--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4264339482 dns-udp-queries-received-ipv6: 345380458 dns-tcp-queries-received-ipv4: 115325286 dns-tcp-queries-received-ipv6: 14904483 dns-udp-responses-sent-ipv4: 4258442192 dns-udp-responses-sent-ipv6: 345294873 dns-tcp-responses-sent-ipv4: 116843271 dns-tcp-responses-sent-ipv6: 14945163