--- service: j.root-servers.net start-period: '2015-01-25T00:00:00Z' end-period: '2015-01-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2929133383 dns-udp-queries-received-ipv6: 250496857 dns-tcp-queries-received-ipv4: 27950468 dns-tcp-queries-received-ipv6: 6024403 dns-udp-responses-sent-ipv4: 2925627207 dns-udp-responses-sent-ipv6: 250694363 dns-tcp-responses-sent-ipv4: 27898018 dns-tcp-responses-sent-ipv6: 4817912