Extract Domains Now
Step 1 — Choose input method
📁
Click to upload or drag & drop
TXT · CSV · HTML · JSON · XML · LOG · MD (Max 20MB)
Step 2 — Configure extraction
Step 3 — Extract
What Domain Extractor Online does — and who it's for 🚀 Extract now
Cleaning domains out of messy input used to mean juggling regex snippets, spreadsheet formulas, and command-line one-liners. This tool does all of that in one paste. Here's the short version.
🎯 What it does
Takes any input — a paragraph of text, a list of URLs, an email dump, a log file, HTML source — and returns a clean, deduplicated list of every domain mentioned. Handles multi-part TLDs, new gTLDs, and public suffixes correctly via the Public Suffix List.
👤 Who it's for
SEO specialists preparing Disavow files or auditing backlinks. Security analysts pulling IOCs from threat feeds. Marketers cleaning lead lists. Developers preprocessing log data before WHOIS or DNS lookups.
🔒 Why it's safe
Every byte of processing happens in your browser's JavaScript sandbox. Your text, uploaded files, and results are never sent to our servers — verifiable in your browser's DevTools Network tab.
⚡ Why it's fast
Optimized regex tokenizer processes 20MB in under 2 seconds. Bulk mode handles 3,000+ domains without freezing the UI. TLD validation uses a bundled IANA list — no external API round-trips.
💡 What makes it different
Most free extractors grab anything that looks like x.y. This one validates against IANA, reduces to registrable domain with PSL rules, and gives you fine-grained control — filter by TLD, sort, keep or strip subdomains, extract emails alongside.
🌍 10 languages
English (US/UK/Canada/Philippines), Polski, Bahasa Indonesia, Tiếng Việt, ภาษาไทย, Türkçe, Español — proper native translations with localized TLD examples.
How to Use — Step by Step Tutorial 🚀 Extract now
Step 1: Choose Your Input Method
- Paste Text: Copy and paste any text containing domains, URLs, or emails
- Upload File: Upload TXT/CSV/HTML/JSON/XML/LOG/MD (up to 20MB)
- Load Sample: Click any quick-sample button above to see how it works
Step 2: Configure Extraction Options
- Source Type: Plain text, URLs, or emails — pick what matches your input
- Domain Mode: Remove duplicates (default), keep subdomains, or registrable only
- TLD Filter: All TLDs, popular (com/org/net/…), or custom list
- Domain Level: Root only, 2-level, 3-level — narrow to what you need
- Sort: Alphabetical, by length, or grouped by TLD
Step 3: Extract & Analyze
- Click the big 🚀 Start Calculate button
- Page auto-scrolls to the results — no hunting for output
- Use per-row 🔍 (Google Index), 🌐 (open), 📋 (WHOIS), 📄 (copy) actions
- Click 🔄 Recalculate in the results panel to jump back to input and try new options
Step 4: Batch Operations
- Select All / Deselect All: Quickly select all domains
- Batch Google Index Check: Open Google site: for each selected domain
- Batch Open: Open selected domains in new tabs (10+ tabs prompts confirm)
- Batch WHOIS: Look up registration info for multiple domains
Step 5: Export Your Results
- CSV: Import to Excel / Google Sheets
- TXT: Plain-text list, one per line
- JSON: Structured data with counts and timestamp
- Copy All: Instantly paste anywhere
Related Tools 🚀 Extract now
Pick the tool that matches your exact use case — each has tuned defaults and examples.
Why Use Our Domain Extractor? 🚀 Extract now
Bulk Processing
Handle up to 20MB and 3,000+ domains in a single run.
100% Private
Runs client-side in your browser — nothing uploaded to any server.
Smart Filtering
Remove duplicates, filter by TLD, custom whitelist, subdomain level.
Multiple Formats
Export CSV, TXT, JSON, or copy to clipboard in one click.
Multi-format Input
Supports TXT, CSV, HTML, JSON, XML, LOG, MD files.
No Signup
Zero registration, zero limits, works on any modern browser.
Common Use Cases 🚀 Extract now
For IT Security Professionals
- Threat Intelligence: Extract IOCs (indicators of compromise) from CCCS/CIRA threat feeds
- Log Sanitization: Clean access logs into deduped domain lists for firewall rules
- Phishing Analysis: Parse suspicious emails and get every referenced domain
For Marketing Teams
- Lead Generation: Extract company domains from scraped contact lists
- Competitor Analysis: Pull competitor domains from industry reports
- Email List Cleaning: Dedupe by domain to avoid over-mailing accounts
For SEO Specialists
- Backlink Analysis: Deduplicate referring domains from Ahrefs/Semrush exports — helps Canadian SEO teams prepare bilingual (EN/FR) client reports
- Disavow List Prep: Extract root domains for Google Disavow submissions
- Migration Audits: Verify redirect targets by parsing sitemap URLs
For Developers & Data Analysts
- Data Cleaning: Normalize URL columns in CSV/Excel datasets
- Log Parsing: Extract unique hosts from server access logs
- API Preparation: Build clean host lists before running WHOIS/DNS batch jobs
Domain Extraction — Technical Details 🚀 Extract now
What counts as a "domain"?
A domain name identifies a resource on the Internet. It consists of one or more labels separated by dots, ending in a top-level domain (TLD). For example, blog.example.co.uk has a subdomain blog, a registrable domain example.co.uk, and a TLD uk (with a secondary suffix co).
Our extraction algorithm
- Tokenise the input with a regex that matches hostname-shaped strings, including those wrapped by
http://,https://, orwww.. - Detect emails separately with an RFC-5322-style pattern and split on
@to grab the domain part. - Validate each candidate against a comprehensive TLD list (all IANA TLDs including new gTLDs).
- Optionally reduce to registrable domain using a public-suffix-list style approach (so
a.b.example.co.ukbecomesexample.co.uk, notco.uk). - Deduplicate case-insensitively, then sort per your preference.
Regex patterns used
domain: /(?:https?:\/\/)?(?:www\.)?([a-zA-Z0-9]([a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?\.)+[a-zA-Z]{2,}/gi
email: /([a-zA-Z0-9._-]+@[a-zA-Z0-9._-]+\.[a-zA-Z]{2,})/giSupported input examples
| Input | Extracted |
|---|---|
Visit https://blog.example.com/post | blog.example.com |
Email me at [email protected] | shop.example.co.uk |
www.github.com/user | github.com |
See https://cdn.jsdelivr.net/npm/vue | cdn.jsdelivr.net |
Bare hostname: api.stripe.com/v1 | api.stripe.com |
Frequently Asked Questions 🚀 Extract now
example.com) out of unstructured input — raw text, URL lists, email addresses, log files, or HTML source. It removes duplicates and can filter by TLD or subdomain level.blog.example.com). "Registrable only" strips to what you would actually buy at a registrar (e.g. example.com, or example.co.uk for country-code second-level TLDs)..ca is a standard single-level TLD managed by CIRA (Canadian Internet Registration Authority), so blog.example.ca reduces to example.ca as the registrable domain. Provincial variants like .gc.ca (Government of Canada) are also handled correctly via the Public Suffix List.fr-CA variant based on demand. For now, the extractor itself is language-neutral — you can paste French text and it will correctly extract every .ca, .qc.ca, .gc.ca and international domain regardless of surrounding language.Where to Buy a Domain — Cheapest Registrars in 2026
Once you've extracted a shortlist of interesting domains, the next question is where to actually register them cheaply. Here are the current honest options based on 5-year total cost of ownership, verified against public pricing pages in August 2026.
| Registrar | .com First yr | Renewal | Free WHOIS | Verdict |
|---|---|---|---|---|
| Cloudflare Registrar | $10.44 | $10.44 | ✓ | At-cost pricing, no markup. Requires Cloudflare nameservers. |
| Porkbun | $11.06 | $11.06 | ✓ | Best all-rounder. Flat pricing, free WHOIS + SSL + email forwarding. |
| Spaceship | $9.08 | $9.98 | ✓ | Cheapest first year. Modern UI, owned by Namecheap. |
| Dynadot | $10.88 | $10.88 | ✓ | Single-tier pricing for everyone since 2025. 500+ TLDs. |
| NameSilo | $11.05 | $11.05 | ✓ | Discount Program drops to $7.75/yr for 5,000+ domains. |
| Namecheap | $5.98 | $13.98 | ✓ | Nice UX. Renewal price jump. |
| GoDaddy | $0.99 | $21.99 | ✗ | Avoid. Highest renewal and paid WHOIS. |
Popular TLD Pricing Reference
Different TLDs have different prices. Here's a quick reference for the most popular TLDs and where they're cheapest (verified August 2026):
💰 Try it in the tool: Extract a domain list, then click the 💰 icon on any result to see current pricing for that specific TLD.