--- service: i.root-servers.net start-period: '2013-08-22T00:00:00Z' end-period: '2013-08-23T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2295682700 dns-udp-queries-received-ipv6: 151077334 dns-tcp-queries-received-ipv4: 5136976 dns-tcp-queries-received-ipv6: 166191 dns-udp-responses-sent-ipv4: 2238952356 dns-udp-responses-sent-ipv6: 151034494 dns-tcp-responses-sent-ipv4: 5127019 dns-tcp-responses-sent-ipv6: 164864