--- version: rssac002v4 service: a.root-servers.net start-period: '2023-05-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6875492900 dns-udp-queries-received-ipv6: 2016372290 dns-tcp-queries-received-ipv4: 425054066 dns-tcp-queries-received-ipv6: 145216678 dns-udp-responses-sent-ipv4: 6362128665 dns-udp-responses-sent-ipv6: 1642802225 dns-tcp-responses-sent-ipv4: 380388899 dns-tcp-responses-sent-ipv6: 111368816