--- version: rssac002v4 service: a.root-servers.net start-period: '2022-02-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5300682083 dns-udp-queries-received-ipv6: 1460858260 dns-tcp-queries-received-ipv4: 320843729 dns-tcp-queries-received-ipv6: 83500568 dns-udp-responses-sent-ipv4: 5501787899 dns-udp-responses-sent-ipv6: 1572497791 dns-tcp-responses-sent-ipv4: 312929754 dns-tcp-responses-sent-ipv6: 83289768