--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5485008352 dns-udp-queries-received-ipv6: 1253405329 dns-tcp-queries-received-ipv4: 323783103 dns-tcp-queries-received-ipv6: 56235812 dns-udp-responses-sent-ipv4: 5551873274 dns-udp-responses-sent-ipv6: 1288387751 dns-tcp-responses-sent-ipv4: 299504493 dns-tcp-responses-sent-ipv6: 56239810