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DNS Record Lookup: Read A, MX and TXT Results
A DNS record lookup is useful only when each returned record is compared with the job that hostname is meant to do.
Запусти свіжий аудит DomainLens і використовуй звіт як список пріоритетів.
Start with the record and the hostname
A DNS lookup does not return one universal answer. An A record answers where a web hostname resolves; MX answers which host accepts mail; TXT carries policies such as SPF and DMARC. Querying the wrong name is the usual reason a correct DNS zone appears broken.
Check the root domain, www hostname and mail subdomains separately. A working apex does not prove www exists, and a valid SPF TXT record does not prove the MX target resolves.
Interpret the result before editing
Use the live DNS checker for a grouped result, the DNS record types guide for each value, and the nslookup and dig command guide when you need to query one resolver directly.
| Result | Check next |
|---|---|
| No A/AAAA | Confirm the hostname should serve a website |
| MX target | Confirm that target has an address record |
| TXT SPF | Keep exactly one SPF policy |
| DMARC | Start at p=none and read reports |