--- version: rssac002v3 service: a.root-servers.net start-period: '2018-09-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4342153301 dns-udp-queries-received-ipv6: 608730374 dns-tcp-queries-received-ipv4: 115950079 dns-tcp-queries-received-ipv6: 23724109 dns-udp-responses-sent-ipv4: 4219662801 dns-udp-responses-sent-ipv6: 608443391 dns-tcp-responses-sent-ipv4: 112063480 dns-tcp-responses-sent-ipv6: 23764409