--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-23T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5015326883 dns-udp-queries-received-ipv6: 1182923854 dns-tcp-queries-received-ipv4: 294316549 dns-tcp-queries-received-ipv6: 46372056 dns-udp-responses-sent-ipv4: 5031991287 dns-udp-responses-sent-ipv6: 1203251223 dns-tcp-responses-sent-ipv4: 271969399 dns-tcp-responses-sent-ipv6: 46404568