--- service: i.root-servers.net start-period: '2014-09-28T00:00:00Z' end-period: '2014-09-29T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2711057083 dns-udp-queries-received-ipv6: 197392288 dns-tcp-queries-received-ipv4: 5923152 dns-tcp-queries-received-ipv6: 239234 dns-udp-responses-sent-ipv4: 2662838839 dns-udp-responses-sent-ipv6: 200737540 dns-tcp-responses-sent-ipv4: 6144400 dns-tcp-responses-sent-ipv6: 241521