--- version: rssac002v3 service: i.root-servers.net start-period: '2019-02-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6402097378 dns-udp-queries-received-ipv6: 1298750438 dns-tcp-queries-received-ipv4: 149170836 dns-tcp-queries-received-ipv6: 31725012 dns-udp-responses-sent-ipv4: 6250182514 dns-udp-responses-sent-ipv6: 1284812118 dns-tcp-responses-sent-ipv4: 131341903 dns-tcp-responses-sent-ipv6: 28909863