--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5457233621 dns-udp-queries-received-ipv6: 960721712 dns-tcp-queries-received-ipv4: 429338230 dns-tcp-queries-received-ipv6: 110100548 dns-udp-responses-sent-ipv4: 4353603128 dns-udp-responses-sent-ipv6: 907471370 dns-tcp-responses-sent-ipv4: 376591995 dns-tcp-responses-sent-ipv6: 104752506