--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3587751773 dns-udp-queries-received-ipv6: 420580925 dns-tcp-queries-received-ipv4: 118257959 dns-tcp-queries-received-ipv6: 16993458 dns-udp-responses-sent-ipv4: 3582479583 dns-udp-responses-sent-ipv6: 420549075 dns-tcp-responses-sent-ipv4: 117982467 dns-tcp-responses-sent-ipv6: 17081453