--- version: rssac002v4 service: a.root-servers.net start-period: '2023-06-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6645863392 dns-udp-queries-received-ipv6: 1484227296 dns-tcp-queries-received-ipv4: 362100913 dns-tcp-queries-received-ipv6: 77613453 dns-udp-responses-sent-ipv4: 6482636562 dns-udp-responses-sent-ipv6: 1475035619 dns-tcp-responses-sent-ipv4: 353347162 dns-tcp-responses-sent-ipv6: 75016518