--- service: i.root-servers.net start-period: '2015-02-01T00:00:00Z' end-period: '2015-02-02T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2782303143 dns-udp-queries-received-ipv6: 231574853 dns-tcp-queries-received-ipv4: 6325273 dns-tcp-queries-received-ipv6: 185256 dns-udp-responses-sent-ipv4: 2740357805 dns-udp-responses-sent-ipv6: 231526577 dns-tcp-responses-sent-ipv4: 6361584 dns-tcp-responses-sent-ipv6: 193111