--- version: rssac002v4 service: a.root-servers.net start-period: '2021-11-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4915568992 dns-udp-queries-received-ipv6: 1374313463 dns-tcp-queries-received-ipv4: 361058550 dns-tcp-queries-received-ipv6: 76333705 dns-udp-responses-sent-ipv4: 4903192925 dns-udp-responses-sent-ipv6: 1384105033 dns-tcp-responses-sent-ipv4: 357331744 dns-tcp-responses-sent-ipv6: 76328314