--- version: rssac002v4 service: a.root-servers.net start-period: '2023-05-21T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6606120516 dns-udp-queries-received-ipv6: 1974614666 dns-tcp-queries-received-ipv4: 418224807 dns-tcp-queries-received-ipv6: 144686209 dns-udp-responses-sent-ipv4: 6158511788 dns-udp-responses-sent-ipv6: 1660294912 dns-tcp-responses-sent-ipv4: 369407783 dns-tcp-responses-sent-ipv6: 108778341