--- version: rssac002v3 service: j.root-servers.net start-period: '2021-07-14T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6716536525 dns-udp-queries-received-ipv6: 1359646365 dns-tcp-queries-received-ipv4: 601569744 dns-tcp-queries-received-ipv6: 113152252 dns-udp-responses-sent-ipv4: 6217544300 dns-udp-responses-sent-ipv6: 1356285331 dns-tcp-responses-sent-ipv4: 423300205 dns-tcp-responses-sent-ipv6: 113047224