--- version: rssac002v4 service: a.root-servers.net start-period: '2022-01-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5278806042 dns-udp-queries-received-ipv6: 1280170974 dns-tcp-queries-received-ipv4: 319214919 dns-tcp-queries-received-ipv6: 65215552 dns-udp-responses-sent-ipv4: 5306788597 dns-udp-responses-sent-ipv6: 1303527162 dns-tcp-responses-sent-ipv4: 293796055 dns-tcp-responses-sent-ipv6: 65254445