--- service: a.root-servers.net start-period: '2016-09-28T00:00:00Z' end-period: '2016-09-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4894959609 dns-udp-queries-received-ipv6: 425136747 dns-tcp-queries-received-ipv4: 119768897 dns-tcp-queries-received-ipv6: 5346275 dns-udp-responses-sent-ipv4: 4841413420 dns-udp-responses-sent-ipv6: 425084703 dns-tcp-responses-sent-ipv4: 120899471 dns-tcp-responses-sent-ipv6: 5414905