--- service: i.root-servers.net start-period: '2013-08-23T00:00:00Z' end-period: '2013-08-24T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2202375518 dns-udp-queries-received-ipv6: 146894814 dns-tcp-queries-received-ipv4: 4805225 dns-tcp-queries-received-ipv6: 166470 dns-udp-responses-sent-ipv4: 2151072625 dns-udp-responses-sent-ipv6: 146695402 dns-tcp-responses-sent-ipv4: 4797972 dns-tcp-responses-sent-ipv6: 164983