Domain Availability Checker
A domain discovery and availability checker for security research, typo-squatting analysis, and brand monitoring.
Implementation notes
Domain Availability Checker provides a practical bridge between recon workflows and actionable brand/security decisions.
Project snapshot
Problem
Security and brand teams need fast domain availability checks and typo-squatting discovery workflows, but existing tools are often fragmented.
What it does
- Checks domain availability across candidate domain lists.
- Supports typo-squatting and lookalike candidate generation.
- Produces actionable output for triage and follow-up.
Use cases
- Brand protection monitoring and abuse-prevention workflows.
- Threat hunting for suspicious lookalike domains.
- Pre-registration analysis during product launches.
Stack and architecture
- TypeScript application with provider abstraction.
- Batch-processing pipeline for domain candidate lists.
- Output designed for analyst review and automation hooks.
Status and roadmap
Current status: Maintained. Published 11/20/2025 and last updated 1/15/2026.
- Integrate more registrars and WHOIS sources.
- Add richer risk-scoring signals.
- Improve dashboard and historical tracking support.
Links
Related research posts
- A Practical Guide to Preventing Subdomain Hijacking - Forgetting to delete an old DNS record can leave you vulnerable to subdomain hijacking. Attackers can claim your unused addresses to host malicious content under your brand's name. Learn how to find and fix these dangling pointers with o...