--- service: i.root-servers.net start-period: '2014-01-30T00:00:00Z' end-period: '2014-01-31T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2401271546 dns-udp-queries-received-ipv6: 159447461 dns-tcp-queries-received-ipv4: 5321732 dns-tcp-queries-received-ipv6: 273280 dns-udp-responses-sent-ipv4: 2346748593 dns-udp-responses-sent-ipv6: 159642061 dns-tcp-responses-sent-ipv4: 5311309 dns-tcp-responses-sent-ipv6: 276789