--- service: i.root-servers.net start-period: '2015-08-22T00:00:00Z' end-period: '2015-08-23T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3178345143 dns-udp-queries-received-ipv6: 243916594 dns-tcp-queries-received-ipv4: 28927290 dns-tcp-queries-received-ipv6: 363384 dns-udp-responses-sent-ipv4: 4750534826 dns-udp-responses-sent-ipv6: 243947882 dns-tcp-responses-sent-ipv4: 28978770 dns-tcp-responses-sent-ipv6: 366231