--- service: d.root-servers.net start-period: '2016-02-23T00:00:00Z' end-period: '2016-02-23T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4633019580 dns-udp-queries-received-ipv6: 504804054 dns-tcp-queries-received-ipv4: 26322099 dns-tcp-queries-received-ipv6: 1129863 dns-udp-responses-sent-ipv4: 4613235274 dns-udp-responses-sent-ipv6: 504487588 dns-tcp-responses-sent-ipv4: 26301971 dns-tcp-responses-sent-ipv6: 1129837