--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4692587673 dns-udp-queries-received-ipv6: 846052123 dns-tcp-queries-received-ipv4: 441352595 dns-tcp-queries-received-ipv6: 108607334 dns-udp-responses-sent-ipv4: 4185818033 dns-udp-responses-sent-ipv6: 824287509 dns-tcp-responses-sent-ipv4: 383071075 dns-tcp-responses-sent-ipv6: 102233671