--- version: rssac002v4 service: a.root-servers.net start-period: '2022-12-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5945968217 dns-udp-queries-received-ipv6: 1784575403 dns-tcp-queries-received-ipv4: 326206743 dns-tcp-queries-received-ipv6: 81547624 dns-udp-responses-sent-ipv4: 5768711280 dns-udp-responses-sent-ipv6: 1731974760 dns-tcp-responses-sent-ipv4: 291432644 dns-tcp-responses-sent-ipv6: 79326255