--- service: i.root-servers.net start-period: '2013-10-17T00:00:00Z' end-period: '2013-10-18T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2328196490 dns-udp-queries-received-ipv6: 128201393 dns-tcp-queries-received-ipv4: 4794479 dns-tcp-queries-received-ipv6: 173149 dns-udp-responses-sent-ipv4: 2384925185 dns-udp-responses-sent-ipv6: 136689598 dns-tcp-responses-sent-ipv4: 4846539 dns-tcp-responses-sent-ipv6: 186241