--- service: j.root-servers.net start-period: '2015-09-13T00:00:00Z' end-period: '2015-09-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4652038232 dns-udp-queries-received-ipv6: 270312472 dns-tcp-queries-received-ipv4: 63926841 dns-tcp-queries-received-ipv6: 19331259 dns-udp-responses-sent-ipv4: 3537158977 dns-udp-responses-sent-ipv6: 270140502 dns-tcp-responses-sent-ipv4: 62493599 dns-tcp-responses-sent-ipv6: 17654143