--- service: i.root-servers.net start-period: '2015-11-17T00:00:00Z' end-period: '2015-11-18T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4581295712 dns-udp-queries-received-ipv6: 336162418 dns-tcp-queries-received-ipv4: 28347345 dns-tcp-queries-received-ipv6: 737804 dns-udp-responses-sent-ipv4: 4520130280 dns-udp-responses-sent-ipv6: 341536815 dns-tcp-responses-sent-ipv4: 28356338 dns-tcp-responses-sent-ipv6: 740808