--- service: i.root-servers.net start-period: '2014-08-19T00:00:00Z' end-period: '2014-08-20T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3056155302 dns-udp-queries-received-ipv6: 219934407 dns-tcp-queries-received-ipv4: 7024129 dns-tcp-queries-received-ipv6: 262189 dns-udp-responses-sent-ipv4: 3000049700 dns-udp-responses-sent-ipv6: 220318058 dns-tcp-responses-sent-ipv4: 6571352 dns-tcp-responses-sent-ipv6: 265645