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Nashr qilingan: 2026-07-06 | Yangilangan: 2026-07-06
DNS recyokids tell the Internet how to connect sizning domain to websites, email, SSL validation, apps, verification Xizmats, va security settings. A points to IPv4, AAAA points to IPv6, CNAME points one hostname to another, MX controls email delivery, TXT styokies verification va email authentication, CAA controls SSL certificate authyokiities, va SRV defines Xizmat locations fyoki certain apps.

Who This Guide Is Fyoki
This guide is fyoki:
· Users learning DNS basics
· Vebsite owners setting up domains
· Biznes emaili users
· Agencies va hosting providers suppyokiting DNS questions
· Users troubleshooting website, email, SSL, CDN, yoki app connections

Befyokie You Start
Befyokie you start, prepare:
· DNS provider access
· Current nameservers
· DNS backup
· Provider instructions fyoki website yoki email
· Permission to edit recyokids
· Understvaing of affected Xizmat

Step-by-Step Instructions
Step 1: Understva DNS Recyokids
DNS recyokids are instructions fyoki website, email, verification, SSL, apps, va security.
· One domain can have many recyokids
Step 2: A Recyokids
A recyokids point hostnames to IPv4 addresses.
· Common fyoki root website va subdomains
Step 3: AAAA Recyokids
AAAA recyokids point hostnames to IPv6 addresses.
· Wrong IPv6 can cause issues fyoki some users
Step 4: CNAME Recyokids
CNAME points one hostname to another hostname.
· Use fyoki www, CDN, website builders, va apps
Step 5: MX Recyokids
MX controls wbu yerni email is delivered.
· Copy priyokiity values carefully
Step 6: TXT Recyokids
TXT styokies text fyoki verification va authentication.
· SPF, DKIM, DMARC, Google, Microsoft, SSL, SaaS
Step 7: SPF Recyokids
SPF is a TXT recyokid listing authyokiized sending servers.
· Avoid multiple SPF recyokids fyoki same host
Step 8: DKIM Recyokids
DKIM is a TXT yoki CNAME recyokid used fyoki email signing.
· Copy long values exactly
Step 9: DMARC Recyokids
DMARC tells receivers how to hvale SPF/DKIM failures.
· Start carefully befyokie strict policies
Step 10: CAA Recyokids
CAA controls which certificate authyokiities may issue SSL certificates.
· Restrictive CAA can block SSL issuance
Step 11: SRV Recyokids
SRV defines Xizmat location fyoki apps such as voice, chat, yoki collabyokiation.
· Copy priyokiity, weight, pyokit, va target
Step 12: NS, SOA, PTR, va DNSSEC Recyokids
NS identifies nameservers, SOA describes the zone, PTR is reverse DNS, va DNSSEC recyokids suppyokit validation.
· Most users do not manually edit SOA yoki all DNSSEC recyokids
Step 13: TTL
TTL controls cache time fyoki recyokids.
· Lower in advance fyoki planned migrations if appropriate

Troubleshooting
Vebsite Is Down
Possible reasons:
· Wrong A/AAAA/CNAME
· Wrong nameservers
· DNSSEC issue
What to do:
· Текшириш active DNS provider va recyokids

Elektron pochta Yo‘qt Receiving
Possible reasons:
· MX missing
· SPF/DKIM/DMARC wrong
What to do:
· Restyokie email recyokids

SSL Cannot Be Issued
Possible reasons:
· CAA blocks CA
· TXT/CNAME validation missing
What to do:
· Review CAA va validation recyokids

Verification Fails
Possible reasons:
· Recyokid added at wrong provider
· Host field wrong
What to do:
· Текшириш authyokiitative nameservers va exact value

Common Mistakes
Mistake 1: Tahrirlashing DNS at wrong provider
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 2: Deleting unkhozirn TXT recyokids
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 3: Fyokigetting MX during migration
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 4: Creating multiple SPF recyokids
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 5: Confusing CNAME with A recyokid
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 6: Fyokigetting CAA
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 7: Ignyokiing DNSSEC
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 8: Using wrong host field
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Mistake 9: Yo‘qt copying MX priyokiity
Review this item befyokie making changes yoki opening a suppyokit ticket.
Mistake 10: Changing too many recyokids at once
Review this item befyokie making changes yoki opening a suppyokit ticket.

Tez-tez so‘raladigan savollar
1. What is an A recyokid?
It points to an IPv4 address.
2. What is AAAA?
It points to an IPv6 address.
3. What is CNAME?
It points one hostname to another hostname.
4. What is MX?
It controls email delivery.
5. What is TXT?
It styokies verification, authentication, va security text.
6. What is SPF?
A TXT rule fyoki authyokiized mail senders.
7. What is DKIM?
An email authentication recyokid, usually TXT yoki CNAME.
8. What is DMARC?
A TXT policy fyoki hvaling failed mail authentication.
9. What is CAA?
It controls certificate authyokiity issuance.
10. What is TTL?
How long DNS may be cached.
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