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Latest Articles

Insights, tutorials, and updates about free subdomains, DNS, and developer infrastructure.

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Infrastructure

Building a Global CDN on Cloudflares Anycast Network

How Cloudflares anycast architecture works under the hood, why it makes subdomains faster globally, and what it means for your sites performance and security.

⏱ 8 min read
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Blog

Cloudflare Proxy Vs Dns Only For Subdomains

⏱ 8 min read
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Technical

DNS Caching: Debugged Once and For All

A deep dive into DNS caching at every layer — browser, OS, router, ISP, and authoritative DNS — with concrete steps to flush caches and debug propagation issues in real time.

⏱ 8 min read
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Blog

Dns Propagation Explained For New Users

⏱ 8 min read
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Security

The Domain Takeover Prevention Checklist Every Developer Needs

A practical security checklist to prevent subdomain takeover vulnerabilities — from proper CNAME validation to ensuring DNS records are deleted when deploying services.

⏱ 8 min read
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Blog

Email On Subdomains Mx Spf Dkim Basics

⏱ 8 min read
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Blog

Fixing Cname Loop Errors On Static Hosts

⏱ 8 min read
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Productivity

The Free Tools That Replaced Paid SaaS for Our Entire Team

A curated list of the free-tier tools we rely on to run is-pro.dev — from DNS management to monitoring, error tracking, and CI/CD — and how to maximize value from each.

⏱ 8 min read
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Blog

How To Handle Abuse Reports Responsibly

⏱ 8 min read
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Operations

How We Handle Abuse Reports Without Breaking Legit Users

The moderation system behind is-pro.dev — how we detect abuse, handle false positives, balance free speech with platform safety, and keep the majority of users experience uninterrupted.

⏱ 8 min read
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Blog

How We Think About Fair Use For Free Subdomains

⏱ 8 min read
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Business

Indie SaaS Pricing Psychology: What Every Developer Should Know

How to price your SaaS product when you are competing with free alternatives — understanding value anchoring, the freemium psychological trap, and when free is actually the right model.

⏱ 8 min read
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Security

Let's Encrypt vs Cloudflare Flexible SSL: A Practical Comparison

Understanding the real security differences between Let's Encrypt (end-to-end encryption), Cloudflare Full Strict (edge encryption), and Cloudflare Flexible SSL (partial encryption).

⏱ 8 min read
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Operations

Managing 1000+ Subdomains Without Losing Your Mind

The systems and tools we use at scale to manage thousands of subdomains — from automated DNS provisioning to bulk record updates, monitoring, and expiration management.

⏱ 8 min read
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Blog

Post Incident Review Template For Dns Outages

⏱ 8 min read
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Blog

Preventing Takeovers After Deploy Deletions

⏱ 8 min read
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Security

Reading DNS Logs Like a Pro: Common Patterns and Red Flags

Learn to identify suspicious DNS activity by understanding common log patterns — from normal CNAME chains to signs of domain takeovers, phishing, and brand impersonation.

⏱ 8 min read
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Blog

Using Txt Records For Domain Verification

⏱ 8 min read
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Opinion

Why Free Subdomains Matter for Bootstrappers and Indie Hackers

A personal argument for why free subdomain providers like is-pro.dev are critical infrastructure for the indie hacker ecosystem, enabling anyone to build and ship without upfront costs.

⏱ 8 min read
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Blog

Why Subdomain Requests Get Rejected

⏱ 8 min read
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