--- version: rssac002v4 service: a.root-servers.net start-period: '2023-02-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6763563577 dns-udp-queries-received-ipv6: 2330452713 dns-tcp-queries-received-ipv4: 418963726 dns-tcp-queries-received-ipv6: 214537447 dns-udp-responses-sent-ipv4: 6228809000 dns-udp-responses-sent-ipv6: 2024305034 dns-tcp-responses-sent-ipv4: 350304282 dns-tcp-responses-sent-ipv6: 190223388