--- version: rssac002v4 service: a.root-servers.net start-period: '2023-04-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7415272834 dns-udp-queries-received-ipv6: 2409605723 dns-tcp-queries-received-ipv4: 472407729 dns-tcp-queries-received-ipv6: 177146639 dns-udp-responses-sent-ipv4: 6794352883 dns-udp-responses-sent-ipv6: 1974973458 dns-tcp-responses-sent-ipv4: 412678726 dns-tcp-responses-sent-ipv6: 130670385