--- service: i.root-servers.net start-period: '2015-10-04T00:00:00Z' end-period: '2015-10-05T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3556993059 dns-udp-queries-received-ipv6: 296636689 dns-tcp-queries-received-ipv4: 30166709 dns-tcp-queries-received-ipv6: 387517 dns-udp-responses-sent-ipv4: 3499271275 dns-udp-responses-sent-ipv6: 295128225 dns-tcp-responses-sent-ipv4: 30104502 dns-tcp-responses-sent-ipv6: 388877