--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4091798023 dns-udp-queries-received-ipv6: 394364480 dns-tcp-queries-received-ipv4: 103573779 dns-tcp-queries-received-ipv6: 13076528 dns-udp-responses-sent-ipv4: 4089964408 dns-udp-responses-sent-ipv6: 394341696 dns-tcp-responses-sent-ipv4: 104313716 dns-tcp-responses-sent-ipv6: 13229678