--- version: rssac002v3 service: a.root-servers.net start-period: '2018-05-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5286871336 dns-udp-queries-received-ipv6: 370979225 dns-tcp-queries-received-ipv4: 124631401 dns-tcp-queries-received-ipv6: 15153679 dns-udp-responses-sent-ipv4: 5218255890 dns-udp-responses-sent-ipv6: 370683623 dns-tcp-responses-sent-ipv4: 123919519 dns-tcp-responses-sent-ipv6: 15202310