--- service: i.root-servers.net start-period: '2016-05-06T00:00:00Z' end-period: '2016-05-07T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5354905463 dns-udp-queries-received-ipv6: 430626914 dns-tcp-queries-received-ipv4: 48563305 dns-tcp-queries-received-ipv6: 916613 dns-udp-responses-sent-ipv4: 5305798345 dns-udp-responses-sent-ipv6: 435878802 dns-tcp-responses-sent-ipv4: 48174120 dns-tcp-responses-sent-ipv6: 921118