--- service: i.root-servers.net start-period: '2014-09-07T00:00:00Z' end-period: '2014-09-08T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2539157002 dns-udp-queries-received-ipv6: 196497422 dns-tcp-queries-received-ipv4: 5288912 dns-tcp-queries-received-ipv6: 239172 dns-udp-responses-sent-ipv4: 2488655379 dns-udp-responses-sent-ipv6: 196471346 dns-tcp-responses-sent-ipv4: 5469146 dns-tcp-responses-sent-ipv6: 241889