--- service: i.root-servers.net start-period: '2016-03-31T00:00:00Z' end-period: '2016-04-01T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5426410698 dns-udp-queries-received-ipv6: 437346078 dns-tcp-queries-received-ipv4: 23949173 dns-tcp-queries-received-ipv6: 846420 dns-udp-responses-sent-ipv4: 5329716406 dns-udp-responses-sent-ipv6: 436851889 dns-tcp-responses-sent-ipv4: 22910516 dns-tcp-responses-sent-ipv6: 853597