--- service: i.root-servers.net start-period: '2016-04-26T00:00:00Z' end-period: '2016-04-27T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5466659442 dns-udp-queries-received-ipv6: 428324037 dns-tcp-queries-received-ipv4: 28703543 dns-tcp-queries-received-ipv6: 928408 dns-udp-responses-sent-ipv4: 5576787100 dns-udp-responses-sent-ipv6: 433381457 dns-tcp-responses-sent-ipv4: 28472603 dns-tcp-responses-sent-ipv6: 934071