DNS запрос
Запрос DNS-записей любого домена — A, AAAA, MX, TXT, NS, SOA, CNAME и другие.
DNS Lookup
Query DNS records for any domain. Check A, AAAA, MX, TXT, NS, SOA, CNAME, SRV, and CAA records using Google or Cloudflare DNS.
What Is DNS Lookup?
The Domain Name System (DNS) is the backbone of the internet, translating human-readable domain names like example.com into machine-readable IP addresses and routing records that direct traffic, email, and services to the right servers. Without DNS, you would need to memorize numerical IP addresses for every website you visit.
A DNS lookup queries authoritative nameservers for specific record types associated with a domain. Different record types serve different purposes: A records point to web servers, MX records route email, TXT records handle authentication and verification, and many more.
Domainwise performs DNS lookups using DNS over HTTPS (DoH), an encrypted protocol that sends queries inside HTTPS connections through trusted public resolvers. You can choose between Google DNS (8.8.8.8) and Cloudflare DNS (1.1.1.1), and compare results from both to verify DNS propagation after making changes.
This tool is completely free, requires no sign-up, and supports 12 languages. Navigate here from any Domainwise tool using the ToolSwitcher bar, or arrive with a pre-filled domain via the ?q= parameter from RelatedTools chips.
DNS Record Types Explained
Domainwise supports 9 DNS record types, covering every common query you might need. Here is what each record type does and when you would use it:
| Record | Purpose | Example Use |
|---|---|---|
| A | Maps a domain to an IPv4 address | Find which server hosts a website |
| AAAA | Maps a domain to an IPv6 address | Verify IPv6 connectivity and dual-stack setup |
| MX | Mail exchange servers with priority | Diagnose email routing and delivery issues |
| TXT | Text records for SPF, DKIM, DMARC, and verification | Check email authentication and domain ownership tokens |
| NS | Authoritative nameservers for the domain | Verify which DNS provider controls the zone |
| SOA | Start of Authority with primary NS and zone serial | Check zone serial numbers and refresh intervals |
| CNAME | Canonical name alias from one domain to another | Debug subdomain redirects and CDN configurations |
| SRV | Service location records with port and priority | Find service endpoints for SIP, XMPP, or LDAP |
| CAA | Certificate Authority Authorization | Verify which CAs can issue SSL certificates |
Each result includes the record's TTL (Time to Live) value, which tells you how long the record is cached by resolvers before being refreshed.
Common DNS Troubleshooting Scenarios
DNS issues are among the most frequent causes of website and email problems. Here are the scenarios you can diagnose with this tool:
- Website not loading — Check the A and AAAA records to confirm the domain points to the correct server IP address. A missing or incorrect A record means browsers cannot find your server.
- Email not delivering — Verify that MX records point to the correct mail server. Then check TXT records for valid SPF, DKIM, and DMARC configuration. Misconfigured email authentication records are one of the top causes of messages landing in spam or being rejected.
- SSL certificate will not issue — Look up CAA records to ensure your certificate authority is authorized to issue certificates for the domain. If CAA records exist but do not include your CA, issuance will be blocked. Verify the certificate with our SSL/TLS Checker after resolving the issue.
- Subdomain not working — Query the CNAME or A record for the specific subdomain. A missing CNAME alias or an incorrect IP in the A record will prevent the subdomain from resolving.
- DNS changes not taking effect — Query from both Google and Cloudflare resolvers and compare results. Note the TTL values, which tell you when the resolver cache will expire. Changes propagate as old TTLs expire across the global DNS infrastructure.
Check the registration details and ownership of any domain with our WHOIS Lookup tool alongside your DNS analysis.
Email Authentication Records
Email deliverability depends heavily on three DNS record types, all stored as TXT records. Understanding these is essential for anyone managing email for a domain:
- SPF (Sender Policy Framework) — Specifies which mail servers are authorized to send email on behalf of your domain. A typical SPF record looks like v=spf1 include:_spf.google.com ~all.
- DKIM (DomainKeys Identified Mail) — Adds a cryptographic signature to outgoing emails that receiving servers verify against a public key published in your DNS. This proves the message was not altered in transit.
- DMARC (Domain-based Message Authentication) — Tells receiving mail servers what to do when SPF or DKIM checks fail: accept, quarantine, or reject the message. DMARC also enables reporting so you can monitor abuse.
Use the DNS Lookup tool to query TXT records for your domain and verify that all three authentication mechanisms are properly configured. Missing or misconfigured records are among the most common reasons emails end up in spam folders.
Related Guides
Expand your knowledge of DNS and domain management with these articles from the Domainwise knowledge base:
- Understanding Domain Names — A full guide explaining how domain names work, the role of DNS in resolving them, TLD categories, and the registration lifecycle.
- SSL Certificates Explained — Learn how SSL/TLS certificates work, the different types (DV, OV, EV), and how CAA DNS records control which certificate authorities can issue certificates for your domain.
Explore all our free domain tools including WHOIS lookup, SSL checking, website status monitoring, IP geolocation, Punycode conversion, and social handle checking.