--- version: rssac002v3 service: a.root-servers.net start-period: '2018-04-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5488243404 dns-udp-queries-received-ipv6: 348021637 dns-tcp-queries-received-ipv4: 107507467 dns-tcp-queries-received-ipv6: 15095776 dns-udp-responses-sent-ipv4: 5483252666 dns-udp-responses-sent-ipv6: 347932607 dns-tcp-responses-sent-ipv4: 107609612 dns-tcp-responses-sent-ipv6: 15136894