--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5322003506 dns-udp-queries-received-ipv6: 935930451 dns-tcp-queries-received-ipv4: 495374640 dns-tcp-queries-received-ipv6: 110005006 dns-udp-responses-sent-ipv4: 4631882438 dns-udp-responses-sent-ipv6: 929729263 dns-tcp-responses-sent-ipv4: 419492015 dns-tcp-responses-sent-ipv6: 103722562