--- version: rssac002v3 service: a.root-servers.net start-period: '2019-09-12T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6367559517 dns-udp-queries-received-ipv6: 1183382741 dns-tcp-queries-received-ipv4: 189346485 dns-tcp-queries-received-ipv6: 35159896 dns-udp-responses-sent-ipv4: 6200654332 dns-udp-responses-sent-ipv6: 1182822051 dns-tcp-responses-sent-ipv4: 185616025 dns-tcp-responses-sent-ipv6: 36332397