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Viewing articles tagged 'dnsnameservers'

A and AAAA Records Pointing a name at an address.THE A RECORDMaps a name to an IPv4 address. The fundamental record... A DNS Change Checklist Before, during and after.BEFORERecord or export the current zone Note which provider holds DNS... A DNS Health Check What to verify periodically.ANNUALLY, OR AFTER ANY CHANGENameservers are what you expect The... A DNS Reference Card The essentials on one page.FIND YOUR NAMESERVERSClient Area > Services > My Services, or... Adding a Second Domain to an Existing Site Serving one site at two names.THE SITUATIONA rebrand, a defensive registration, or a regional... Adding a Subdomain and Its DNS Two separate things.WHAT CREATING A SUBDOMAIN IN CPANEL DOESCreates the directory, configures the... Adding Records for Third-Party Services Verification and integration.WHAT ASKS FOR THEMSearch Console Business profile verification Email... Authoritative Versus Recursive DNS Two different roles.AUTHORITATIVEServers holding the actual records for a domain. They are the... CAA Records Controlling which authorities may issue certificates.WHAT THEY DOSpecify which certificate... Changing Nameservers at Your Registrar The mechanics.FOR DOMAINS REGISTERED WITH USClient Area > Domains > select the domain >... Checking DNS From the Command Line The faster method.WHY BOTHERFaster than any web interface, and it works without an internet... Checking Which Nameservers a Domain Uses Confirming the current state.THE METHODA WHOIS lookup on the domain shows the nameservers... CNAME Records Pointing a name at another name.WHAT IT DOESMakes one name an alias for another. Queries for the... Common DNS Mistakes What goes wrong.EDITING RECORDS IN THE WRONG PLACEChanging cPanel records while nameservers point... Diagnosing Mail Delivery With DNS Tools Checking the records that matter.WHAT TO CHECKMX records exist and point at the correct hostname... DNS and Certificate Issuance How AutoSSL depends on DNS.THE CONNECTIONAutoSSL validates that you control a domain, usually by... DNS and Nameservers: Everything That Matters, Briefly The whole category in one page.THE TWO PLACESNameservers are set at your registrar. Records are... DNS and Nameservers: The Short Version Everything essential.THE TWO PLACESNameservers: set at the registrar.Records: held wherever those... DNS Best Practices Habits worth adopting.RECORD WHERE EVERYTHING LIVESRegistrar, DNS provider, and who has access.... DNS Considerations for Multiple Locations Serving different regions.WHAT PEOPLE WANTVisitors directed to a nearer server, or to... DNS Considerations When You Cannot Reach the Registrar Losing access to domain control.THE SITUATIONSForgotten credentials with an unreachable contact... DNS Costs and What You Pay For Where money is involved.WHAT COSTS MONEYDomain registration and renewal Premium DNS services,... DNS Documentation Worth Keeping The record that makes recovery possible.WHAT TO RECORDWhere the domain is registered, and the... DNS Emergencies and What to Do When something is seriously wrong.THE DOMAIN DOES NOT RESOLVE AT ALLCheck expiry first. An... DNS for a Domain You Are Not Yet Using Parked and held domains.THE SITUATIONA domain registered for future use, or defensively, with no... DNS for Domains Used Only for Email Mail with no website.THE SITUATIONA business with professional email on their domain and no... DNS for Staging and Development Sites Separate environments.THE OPTIONSA subdomain of your main domain A separate domain A hosts file... DNS Myths What people believe that is not true.THAT PROPAGATION TAKES 48 HOURS ALWAYSIt takes up to the... DNS Problems After a Domain Transfer Moving a domain between registrars.WHAT CAN CHANGESome transfers reset nameservers to the new... DNS Questions and Short Answers Common queries.HOW LONG DOES PROPAGATION TAKE?Up to the previous TTL, usually less. Query your... DNS Records for Common Services What various services ask for.SEARCH CONSOLEA TXT record at the bare domain, or a file on the... DNS Security Considerations Protecting your domain's records.WHAT AN ATTACKER GAINS FROM CONTROLLING YOUR DNSThe ability to... DNS Situations Worth Preparing For Anticipating problems.THE DOMAIN EXPIRINGAuto-renewal, a valid card, and a contact address on a... DNS Terminology Explained The words you will encounter.REGISTRAR: where the domain is registeredREGISTRY: the organisation... DNS Tools Worth Knowing What to use for checking.WEB-BASED LOOKUP TOOLSQuery DNS from outside your own network. The... DNS When Changing Hosting Providers The records that must change.WHAT CHANGESThe A records for the domain, www and every subdomain,... DNS When Using an External Mail Provider Mail elsewhere, website with us.WHAT TO CHANGEMX records pointing at the provider's servers, with... DNS When Working With a Developer or Agency Shared control.WHO SHOULD HOLD WHATThe domain registered in your business's name, with your... DNS Works but the Site Shows a Different Website Resolving correctly, serving wrongly.WHAT IT MEANSDNS is fine. The request reached a server, and... DNSSEC Explained Signing DNS responses.WHAT IT DOESCryptographically signs DNS records so a resolver can verify... Explaining DNS to a Client Making it understandable.THE ANALOGY THAT WORKSA domain is like a business name in a directory.... Exporting and Backing Up Your DNS Records nobody else backs up.WHY THIS MATTERSNo hosting backup includes DNS records held at an... Flushing Your Own DNS Cache When the problem is your machine.WHEN THIS APPLIESEveryone else sees the change and you do not.Or... Getting Help With DNS What we can do.WHAT WE CAN HELP WITHWhat your records should be Whether your domain points at us... How Long Should I Wait? Realistic timings.A RECORD CHANGEUp to the previous TTL. If that was four hours, allow four... How Resolvers and Caching Work Why changes take time.WHAT A RESOLVER ISThe service your device asks when it needs to find a... Intermittent DNS Failures Working sometimes.WHAT TO ESTABLISHIs it genuinely intermittent, or consistently different by... Keeping Mail Where It Is While Moving the Website Splitting the two during a migration.WHEN THIS APPLIESYou want the website on a new server and... Migrating DNS Between Providers Moving where records are held.BEFORE STARTINGExport or record every record at the current... Monitoring DNS for Changes Noticing when something changes.WHYAn unexpected nameserver or record change is a serious signal:... Moving a Live Site With No Downtime The careful approach.THE PRINCIPLEHave the new server fully working before anyone is directed at... Multiple Domains Pointing at One Site Several names, one place.WHY YOU MIGHTDefensive registrations of similar names A previous domain... MX Records Directing your mail.WHAT THEY DOSpecify which servers accept mail for your domain.Without them,... My DNS Change Did Not Take Effect The change appears not to have worked.CHECK WHERE YOU MADE ITIf your nameservers point at an... My Domain Does Not Resolve Nothing at all.THE CHECKS, IN ORDERIs the domain registered and not expired? A WHOIS lookup shows... Nameserver Changes and What They Affect Understanding the consequence.WHAT CHANGESWhich servers answer DNS questions for your... Nameservers for Subdomains Delegating part of a domain.WHAT DELEGATION ISNS records for a subdomain pointing at different... NS and SOA Records The administrative records.NS RECORDSList the authoritative nameservers for the zone.They appear... Pointing a Domain at a Different Server Moving where a site is served from.WHAT TO CHANGEThe A record for the domain, and for www, to the... Pointing Mail Somewhere Other Than Your Website Splitting the two.WHEN THIS APPLIESThe website is with us and mail is with an external provider,... Preventing Email Spoofing From Unused Domains Protecting names you do not send from.THE PROBLEMAnyone can send mail claiming to be from your... PTR and Reverse DNS Address to name.WHAT IT ISThe reverse of an A record: given an address, what name does it... Records Disappear or Revert Changes that do not persist.WHAT HAPPENSYou add or change a record, and later it is gone or back... Recovering From a Deleted DNS Zone Records gone.WHAT HAPPENSThe domain stops resolving entirely. Website and mail both fail.The... Registrars, Nameservers and Zones Three things people conflate.THE REGISTRARWhere the domain is registered. They hold the... Setting Up a Subdomain for a Separate Application A distinct site under your domain.THE STEPScPanel > Domains > Create a subdomainIf DNS is... Setting Up DKIM Signing your outgoing mail.WHAT IT DOESYour server signs outgoing mail cryptographically.... Setting Up DNS for a Brand New Domain From registration to a working site.THE SEQUENCERegister the domainOrder hosting, or identify the... Setting Up SPF Correctly The record that says who may send.WHAT IT DOESLists the servers permitted to send mail for your... Some People See the Site and Others Do Not Inconsistent resolution.WHY IT HAPPENSA recent change, with different resolvers holding different... SRV Records Service location records.WHAT THEY DOSpecify the host and port for a particular service, rather... Subdomain Not Working One hostname failing.THE CHECKSDoes the subdomain exist in cPanel? Does a DNS record exist for... Taking Over DNS for an Inherited Site A site you did not set up.WHAT TO ESTABLISH FIRSTWhere the domain is registered Which nameservers... The DNS Records Email Needs Everything required for mail to work.MX RECORDSWhere mail for your domain should be delivered.... The Site Loads for You but Not for Customers A difference in what people see.THE LIKELY CAUSESA hosts file entry on your machine, left from... The Website Resolves to the Wrong Place Pointing somewhere unexpected.WHAT IT MEANSThe A record points at an address other than your... Two Providers Answering for One Domain Conflicting nameservers.HOW IT HAPPENSNameservers from two providers listed at the registrar,... TXT Records Arbitrary text with specific uses.WHAT THEY HOLDText. What matters is what reads it.THE COMMON... Understanding DNS Error Messages What lookup tools report.NXDOMAINThe domain does not exist, according to the authoritative... Understanding Glue Records Nameservers on the domain they serve.THE PROBLEM THEY SOLVEIf ns1.yourdomain.com is a nameserver... Understanding TTL The number that controls propagation.WHAT IT ISTime to live, in seconds. How long a resolver may... Understanding Your Server's Addresses Which address to use.THE SHARED ADDRESSShown in cPanel on the statistics panel. The address your... Using DNS Lookup Tools Checking what is actually published.WHAT THEY DOQuery DNS and show what is returned, without your... Using External Nameservers Instead Keeping DNS elsewhere.WHEN THIS APPLIESYour domain uses Cloudflare, your registrar's DNS, or... Using the cPanel Zone Editor Where records live when your nameservers are ours.FINDING ITcPanel > Domains > Zone... What a DNS Zone Contains The records for your domain.THE TYPICAL ZONEAn A record for the domain, pointing at your server... What DNS Actually Does Turning a name into an address.THE PROBLEM IT SOLVESComputers connect to numeric addresses.... What Should My Records Look Like? A typical zone for a hosted domain.THE WEBSITEAn A record for yourdomain.com, pointing at your... What to Do Before Any DNS Change A short preparation routine.ESTABLISH WHERE DNS LIVESWHOIS for the nameservers. Changes must be... What Your Nameservers Should Be Pointing a domain at us.WHERE TO FIND YOURSClient Area > Services > My Services. Your... When DNS Is Not Actually the Problem Ruling it out.SYMPTOMS THAT LOOK LIKE DNS AND ARE NOTThe site loads but shows an error: DNS... When to Move DNS Away From Your Host Considering an external provider.REASONS TOFaster propagation, at some providers Keeping DNS... Where Do I Change This? Finding the right place.NAMESERVERSAt your registrar. Always.For domains with us, the Client Area... Which Record Do I Need? Choosing the right type.TO POINT A NAME AT A SERVERAn A record, with the server's address.TO... Why DNS Changes Sometimes Seem Not to Work The common explanations.YOU CHANGED IT IN THE WRONG PLACEIf your nameservers point at Cloudflare... Why Mail Stops After a DNS Change The most common DNS casualty.WHAT HAPPENEDAlmost always one of three things.MX RECORDS NOT... Wildcard Records Catching everything not otherwise specified.WHAT THEY DOA record for an asterisk matches any... www Works but the Bare Domain Does Not, or Vice Versa One form resolving and the other not.THE CAUSEA missing record for one of them.Both need to...
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