SpamZilla vs DomCop vs ExpiredDomains.net
The three titans of the domain industry. One is free, two are paid. We put them to the test to see which one delivers the highest authority domains in 2026.
SpamZilla
The Filter Master
Best For: Solopreneurs & PBNs
Proprietary "Clean Score"
Instant Wayback Snapshots
All-in-One Dashboard
DomCop
The Data Behemoth
Best For: Agencies & High Volume
Massive Crawl Depth
Advanced Marketplace APIs
Historical Trust Metrics
ExpiredDomains.net
The Free Classic
Best For: Hobbyists & Research
Largest Global Inventory
Infinite Custom Gathers
High Learning Curve
The Competitors: An Overview
Choosing between these three isn't just about price. It's about your workflow. SpamZilla focuses on the *rejection* of bad domains through automated filters. DomCop focuses on the *discovery* of high-value auctions. ExpiredDomains.net is the raw substrate—the massive database that both of the others often pull from and augment.
Round 1: Database Size and Update Frequency
When we ran a 24-hour monitoring test in January 2026, the results were clear:
- DomCop Winner Real-Time (500k+ new sites/day)
- SpamZilla Near Real-Time (~350k new sites/day)
- ExpiredDomains.net Frequent Batches (~1M+ entries tracked)
Round 2: Spam Filtering & Security Checks
SpamZilla's Clean Score logic
"Our algorithm is trained on 10 years of penalized domain data. We don't just look at 'casino' keywords; we look at link velocity and server neighborhood reputation."
SpamZilla automatically flags redirects, language changes, and adult content history with a single 0-100 score.
DomCop's Trust Metrics
DomCop leans heavily on Majestic's TF/CF and Moz's DA. While powerful, it requires more manual interpretation than SpamZilla's unified "Clean Score."
[UI Workflow Comparison Graphic]
SpamZilla = 3 clicks to audit | DomCop = 5 clicks to discover | ED.net = 15 clicks to verify
Round 3: User Interface and Workflow Integration
If you are building an agency, DomCop's interface is a dream. It's clean, modern, and has one-click exports for your VAs. SpamZilla is slightly more "technical" and "busy," but provides more data on a single screen. ExpiredDomains.net is essentially a massive spreadsheet—it's functional, but it will slow down a professional workflow.
The Final Verdict: Who Should Use What?
Best for Agencies: DomCop
Detailed workflow breakdown suggests that for teams, the discovery speed of DomCop outweighs the higher price tag.
Best for Solopreneurs: SpamZilla
The "Clean Score" replaces the need for a full-time SEO auditor, making it the most cost-effective choice for solo hunters.
Best for Hobbyists: ExpiredDomains.net
Interface screenshots show that while it's old-school, the data depth for niche research is still unparalleled for $0.
Battle FAQ
Can SpamZilla replace my need for Majestic?
SpamZilla pulls data via API, but it doesn't give you the full "Fresh/Historic" index that a direct Majestic subscription does. For high-level hunting, it's sufficient.
Is DomCop faster at finding auction domains?
Our interface screenshots and tests prove that DomCop's auction alerts arrive 2-5 minutes faster than SpamZilla's for GoDaddy Closeouts.
Which tool has the best interface for bulk checking?
SpamZilla. Their bulk uploader is the most robust, allowing up to 10,000 domains at a time with instant metric retrieval.
Why is ExpiredDomains.net still a competitor?
Because of its reach. Not even the paid tools can match ED.net's ability to pull from obscure local country-level TLD marketplaces for free.
Our 2026 Winner: SpamZilla
For 90% of SEOs, SpamZilla provides the perfect balance of cost, safety, and speed.