--- service: i.root-servers.net start-period: '2015-10-13T00:00:00Z' end-period: '2015-10-14T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4419783300 dns-udp-queries-received-ipv6: 345340389 dns-tcp-queries-received-ipv4: 26530239 dns-tcp-queries-received-ipv6: 505868 dns-udp-responses-sent-ipv4: 4353203730 dns-udp-responses-sent-ipv6: 345313242 dns-tcp-responses-sent-ipv4: 26569374 dns-tcp-responses-sent-ipv6: 512464