--- service: d.root-servers.net start-period: '2016-05-28T00:00:00Z' end-period: '2016-05-28T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4564410984 dns-udp-queries-received-ipv6: 702588288 dns-tcp-queries-received-ipv4: 33768305 dns-tcp-queries-received-ipv6: 616617 dns-udp-responses-sent-ipv4: 4550214158 dns-udp-responses-sent-ipv6: 702401085 dns-tcp-responses-sent-ipv4: 33748136 dns-tcp-responses-sent-ipv6: 616563