--- version: rssac002v3 service: a.root-servers.net start-period: '2019-12-27T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6375350606 dns-udp-queries-received-ipv6: 780097520 dns-tcp-queries-received-ipv4: 242752607 dns-tcp-queries-received-ipv6: 69745925 dns-udp-responses-sent-ipv4: 6179060205 dns-udp-responses-sent-ipv6: 778070666 dns-tcp-responses-sent-ipv4: 239636842 dns-tcp-responses-sent-ipv6: 69969818