--- service: i.root-servers.net start-period: '2014-03-18T00:00:00Z' end-period: '2014-03-19T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2735723204 dns-udp-queries-received-ipv6: 188961256 dns-tcp-queries-received-ipv4: 6111377 dns-tcp-queries-received-ipv6: 326597 dns-udp-responses-sent-ipv4: 2677672783 dns-udp-responses-sent-ipv6: 188140788 dns-tcp-responses-sent-ipv4: 6111130 dns-tcp-responses-sent-ipv6: 328127