DomainLens — Local-first Domain & Network Diagnostics

Check DNS, SSL certs, and email records in one clean tool without opening multiple ad-heavy websites

Problem

When managing websites, VPSs, and domains, developers constantly need to check whether DNS has propagated, when SSL certs expire, and whether SPF/DMARC records are correct. They either type dig/curl in the terminal or open several ad-filled web tools, which is tedious and unpleasant.

Solution

A lightweight, local-first desktop and mobile tool that unifies DNS record lookup, SSL certificate inspection, and email security record checks in a clean interface. It supports one-click diagnostics, history, and expiry reminders, and processes data locally without third-party web tools.

Users

Indie developers, ops engineers, and site owners who frequently manage domains and VPSs

MVP

Support A/AAAA/CNAME/MX/TXT/NS/SOA/CAA lookups; SSL issuer, expiry countdown, and SAN display; SPF/DMARC/DKIM checks; save favorite domains; local history; basic expiry reminders

Revenue

Free tier with lookup limits; Pro one-time purchase or subscription for batch monitoring, expiry push, and multi-device sync

Why now

Domain and certificate management is a persistent high-frequency need, but existing web tools are ad-heavy and clunky; it's easy for an indie developer to build a focused, clean local tool that spreads by word of mouth