--- service: i.root-servers.net start-period: '2016-05-23T00:00:00Z' end-period: '2016-05-24T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7001296883 dns-udp-queries-received-ipv6: 490240734 dns-tcp-queries-received-ipv4: 26047374 dns-tcp-queries-received-ipv6: 828607 dns-udp-responses-sent-ipv4: 6965132504 dns-udp-responses-sent-ipv6: 498183064 dns-tcp-responses-sent-ipv4: 26136779 dns-tcp-responses-sent-ipv6: 834045