--- version: rssac002v3 service: a.root-servers.net start-period: '2021-09-30T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5373681868 dns-udp-queries-received-ipv6: 1417005868 dns-tcp-queries-received-ipv4: 330808721 dns-tcp-queries-received-ipv6: 178947556 dns-udp-responses-sent-ipv4: 5373906136 dns-udp-responses-sent-ipv6: 1435426752 dns-tcp-responses-sent-ipv4: 325300420 dns-tcp-responses-sent-ipv6: 194401623