--- version: rssac002v3 service: a.root-servers.net start-period: '2018-07-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3281253934 dns-udp-queries-received-ipv6: 404599455 dns-tcp-queries-received-ipv4: 110689789 dns-tcp-queries-received-ipv6: 17600409 dns-udp-responses-sent-ipv4: 3197753260 dns-udp-responses-sent-ipv6: 404133911 dns-tcp-responses-sent-ipv4: 109733720 dns-tcp-responses-sent-ipv6: 17668581