--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-19T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4733014262 dns-udp-queries-received-ipv6: 1242234226 dns-tcp-queries-received-ipv4: 260466257 dns-tcp-queries-received-ipv6: 43859284 dns-udp-responses-sent-ipv4: 4804840436 dns-udp-responses-sent-ipv6: 1257328857 dns-tcp-responses-sent-ipv4: 257720382 dns-tcp-responses-sent-ipv6: 43922497