DNSniffer.com - Domain Intelligence Platform
dnsniffer.com/search/new live/monitor/datasets/api/mcp
~/dnsniffer·main
$grep -r "your domain" the_internet/
▸Domain Intelligence Engine
A searchable database of every domain name on the internet. Free for humans, free for agents.
$
search↵
tip: use`*`as wildcard ·advanced search
365.1M
domains
9.9K
zones
1.0K
cert issuers
#what you get
$ dnsniffer search
Domain Search
Query 100M+ domains by name, TLD, certificate issuer, or SSL status. Wildcards supported.
$ dnsniffer monitor
Brand Monitoring
Watch a term — get a daily email digest the moment a new lookalike domain hits CT logs or zone files.
$ dnsniffer tail
New Domain Discovery
Live WebSocket feed of every freshly indexed domain, plus daily / weekly / monthly CSV digests.
$ dnsniffer api
JSON API
Read-only JSON API at /api/v1. Cursor pagination, OpenAPI spec. List endpoints are open; detail routes need a free key from your dashboard.
$ dnsniffer datasets
Bulk CSVs
Per-TLD and per-issuer datasets rebuilt daily. Stream-zipped for multi-GB exports.
$ dnsniffer mcp
MCP server
Plug dnsniffer into Claude or any MCP client. Structured tools your agent can call to search, list zones, fetch stats, and more.
#popular datasets
tld↗ .com #150M+ domains └last updated:rebuilt dailytld↗ .org #12M+ domains └last updated:rebuilt dailytld↗ .net #15M+ domains └last updated:rebuilt dailytld↗ .io #800K+ domains └last updated:rebuilt dailyissuer↗ let's-encrypt @ .com #45M+ domains └last updated:rebuilt weeklysecurity↗ expired-ssl @ .com #5M+ domains └last updated:rebuilt weeklynew↗ newly detected — daily #last 24h └last updated:rebuilt dailynew↗ newly detected — weekly #last 7 days └last updated:rebuilt weeklynew↗ newly detected — monthly #last 30 days └last updated:rebuilt monthly
~/dnsniffer/pricing
$ cat pricing.txt
It's free.
Public access is free for everyone — humans, scripts, scrapers, students, pen-testers, the lot. The whole index is fed from public sources (Certificate Transparency, ICANN CZDS); the only cost is compute, and until that starts hurting we're not metering it.
#what you get
- unlimited domain searches via the website
- public read-only API at /api/v1 (no key)
- daily-rebuilt CSV exports per TLD and per issuer
- cursor-paginated bulk listings
- no rate limits on anonymous traffic
~/dnsniffer/cta
$ dnsniffer signup --tier free
Ready to start grepping the web?
no credit card, no rate limits on the public API
dnsniffer.com domain intelligence engine
certificate transparency • zone files • subdomains
#product
- ▸ search
- ▸ new
- ▸ api
- ▸ mcp
#company
- ▸ about
- ▸ terms
#language
- ▸ /zh 中文
$ echo "aDataChaser.comproject"[[email protected]](https://dnsniffer.com/cdn-cgi/l/email-protection#573e39313817333924393e313132257934383a)