--- service: i.root-servers.net start-period: '2015-12-05T00:00:00Z' end-period: '2015-12-06T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4257973327 dns-udp-queries-received-ipv6: 321943318 dns-tcp-queries-received-ipv4: 19000618 dns-tcp-queries-received-ipv6: 877695 dns-udp-responses-sent-ipv4: 4205879706 dns-udp-responses-sent-ipv6: 324885842 dns-tcp-responses-sent-ipv4: 18923460 dns-tcp-responses-sent-ipv6: 882277