DNS

DNS terminology explained: zones, records, resolvers, and authoritative nameservers DNS terminology explained: zones, records, resolvers, and authoritative nameservers is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written… A records explained: pointing a hostname to an IPv4 address A records explained: pointing a hostname to an IPv4 address is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not… AAAA records explained: pointing a hostname to an IPv6 address AAAA records explained: pointing a hostname to an IPv6 address is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may n… CNAME records explained and when not to use one CNAME records explained and when not to use one is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer s… MX records explained: how email delivery chooses a mail server MX records explained: how email delivery chooses a mail server is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may n… TXT records explained: verification, policy, and service metadata TXT records explained: verification, policy, and service metadata is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who ma… SPF records explained without the jargon SPF records explained without the jargon is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer servers… DKIM records explained: selectors, public keys, and message signatures DKIM records explained: selectors, public keys, and message signatures is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers w… DMARC records explained: policy, alignment, and reporting DMARC records explained: policy, alignment, and reporting is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not ad… SRV records explained: priority, weight, port, and target SRV records explained: priority, weight, port, and target is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not ad… CAA records explained and how they can block certificate issuance CAA records explained and how they can block certificate issuance is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who ma… NS records explained: delegation inside and outside a DNS zone NS records explained: delegation inside and outside a DNS zone is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may n… TTL explained: what it changes and what it does not control TTL explained: what it changes and what it does not control is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not… What DNS propagation really means What DNS propagation really means is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer servers every d… How DNS caching works and when flushing a cache helps How DNS caching works and when flushing a cache helps is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not admini… Using nslookup and dig to check DNS records Using nslookup and dig to check DNS records is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer serve… Fixing a DNS SERVFAIL response Fixing a DNS SERVFAIL response is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer servers every day,… Fixing an NXDOMAIN response for a hostname that should exist Fixing an NXDOMAIN response for a hostname that should exist is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not… Fixing DNS_PROBE_FINISHED_NXDOMAIN in a web browser Fixing DNS_PROBE_FINISHED_NXDOMAIN in a web browser is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administ… Using multiple A or AAAA records for one hostname Using multiple A or AAAA records for one hostname is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not administer… Why the root or apex domain cannot always use a CNAME record Why the root or apex domain cannot always use a CNAME record is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not… Wildcard DNS records: what they match and what they do not match Wildcard DNS records: what they match and what they do not match is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may… Why DNS answers can differ between networks and resolvers Why DNS answers can differ between networks and resolvers is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may not ad… Fixing a DNSSEC DS-record mismatch after changing nameservers Fixing a DNSSEC DS-record mismatch after changing nameservers is a practical Spark Rack customer guide about DNS zones, records, delegation, caching, validation, and name resolution. It is written for readers who may no…