--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5498308657 dns-udp-queries-received-ipv6: 1305499461 dns-tcp-queries-received-ipv4: 365999087 dns-tcp-queries-received-ipv6: 48117604 dns-udp-responses-sent-ipv4: 5515254819 dns-udp-responses-sent-ipv6: 1353132911 dns-tcp-responses-sent-ipv4: 338094829 dns-tcp-responses-sent-ipv6: 48032160