How to Do a DNS Lookup in the Browser (A, AAAA, MX, TXT, SOA)

To do a full DNS lookup in a browser, open Zro7 DNS Lookup, type a domain, and click All records. Zro7 queries every common record type in parallel over DNS-over-HTTPS (Cloudflare's 1.1.1.1) and returns the answers: A, AAAA, MX, TXT, NS, SOA, CNAME, CAA, SRV, DNSKEY, and reverse PTR — same data as dig +noall +answer, no terminal required.

Record types, in plain English

• A — IPv4 address. Where a browser connects to the site.
• AAAA — IPv6 address. Preferred when both exist.
• MX — mail exchange. See MX record diagnosis.
• TXT — arbitrary strings. Where SPF, DKIM, DMARC, domain-verification tokens live.
• NS — authoritative name servers for the domain.
• SOA — start of authority: primary NS, admin email, serial, TTLs.
• CNAME — alias to another name. Common for www → apex.
• CAA — which CAs may issue TLS certificates.
• SRV — service records (SIP, XMPP, autodiscover).
• DNSKEY / DS — DNSSEC signing keys. Use DNSSEC Check for chain validation.
• PTR — reverse DNS. Use Reverse DNS.

How DoH works

DNS-over-HTTPS wraps a normal DNS query in an HTTPS POST or GET. Zro7 uses Cloudflare's /dns-query endpoint at 1.1.1.1 with Accept: application/dns-json. The browser gets a JSON response with status, answers, and TTLs — same information as dig, but reachable from any tab and any OS.

What Zro7 doesn't send

The only data leaving your browser is the domain name and record type — required to answer the query at all. No user account, no file, no IP identifier beyond what any HTTP request already reveals.

Steps

1. Open DNS Lookup.
2. Enter a domain (e.g. example.com).
3. Pick a single record type or click All records.