--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4655046387 dns-udp-queries-received-ipv6: 877869351 dns-tcp-queries-received-ipv4: 468236457 dns-tcp-queries-received-ipv6: 120750634 dns-udp-responses-sent-ipv4: 3773680428 dns-udp-responses-sent-ipv6: 819371017 dns-tcp-responses-sent-ipv4: 347579731 dns-tcp-responses-sent-ipv6: 108866005