--- version: rssac002v3 service: a.root-servers.net start-period: '2018-03-18T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3749141409 dns-udp-queries-received-ipv6: 343852293 dns-tcp-queries-received-ipv4: 145909147 dns-tcp-queries-received-ipv6: 15775846 dns-udp-responses-sent-ipv4: 3747673855 dns-udp-responses-sent-ipv6: 343811076 dns-tcp-responses-sent-ipv4: 146241338 dns-tcp-responses-sent-ipv6: 15821245