--- version: rssac002v3 service: a.root-servers.net start-period: '2018-02-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3652937549 dns-udp-queries-received-ipv6: 435636067 dns-tcp-queries-received-ipv4: 147749844 dns-tcp-queries-received-ipv6: 21353284 dns-udp-responses-sent-ipv4: 3647360449 dns-udp-responses-sent-ipv6: 435597762 dns-tcp-responses-sent-ipv4: 146958426 dns-tcp-responses-sent-ipv6: 21473067