Bulk domain discovery and DNS lookup for every account.
Paste a list of account domains. Get back who runs each one’s email, which security vendors and SaaS platforms it has switched on, and how well its mail is protected. DNSai Domain Manager does it in the cloud and keeps every account current. DNS Explorer does it on your desktop, up to 1,000,000 domains a scan, with nothing uploaded.
Domain Manager: 100 domains free, no card required · DNS Explorer: 14-day trial, $0 today (card required) · cancel anytime
Enrichment, account intelligence and security insights from one list
Every domain you add is read from public DNS and returned as a profile. The same run answers three different questions.
Enrichment information
Columns your CRM does not have.
- Mail provider: Microsoft 365, Google Workspace or self-hosted
- The email gateway in front of it: Proofpoint, Mimecast, Barracuda and others
- Hosting provider and country
- 50+ DNS record types, exported as CSV
Account intelligence
What each account already runs.
- SaaS platforms verified in the account’s DNS, grouped by category
- AI vendors switched on: Anthropic, OpenAI, Perplexity and others
- Which accounts run the platforms you integrate with, compete with or sell alongside
- What changed and when, in Domain Manager
Security insights
How well each domain is protected.
- SPF, DKIM and DMARC validated on every domain
- DMARC policy: none, quarantine or reject
- DKIM selector discovery
- Subdomain and reverse DNS discovery in DNS Explorer
| Account | Mail provider | DMARC | Authentication | Host | Platforms found (examples) |
|---|---|---|---|---|---|
| nvidia.com | Microsoft 365 | reject | SPF, DKIM, BIMI | AWS · US | Anthropic, OpenAI, Salesforce, Cisco, Slack, Zoom |
| delta.com | Proofpoint | reject | SPF, DKIM | Vercara · US | Salesforce, Entra ID, OneTrust, Dynatrace, DocuSign |
| netflix.com | Google Workspace | reject | SPF | AWS · US | Anthropic, Salesforce, Klaviyo, 1Password, Notion |
Three real companies, read from their public DNS in September 2026. A record proves the domain published the vendor’s record, not seat count or spend. See the full profiles.
Bulk lookups backed by a living record of the public DNS
Domain Manager runs on the same graph that reads millions of domains on a schedule. DNS Explorer puts the same lookup engine on your own machine.
Cloud or desktop. Both are built by DNSai.
Pick the one that matches how you work. Many teams use both: Domain Manager to keep a portfolio monitored, DNS Explorer for deep one-off investigations.
DNSai Domain Manager
Cloud · app.dnsai.com- Bulk DNS lookup in the cloud, nothing to install
- Full domain profiles: mail provider, SPF, DKIM, DMARC, hosting, platforms
- Portfolios with folders, tags, change detection and alerts
- AI assistant, reports, CSV export, REST API and MCP connector
- Free to start; no domain limit on the top tiers
DNS Explorer
Desktop · Windows & macOS- Built for huge projects: massive domain lists, no limits
- Local processing: your domain data never leaves your machine
- Fast native performance with no lookup limits
- DKIM selector discovery, subdomain and reverse DNS, PDF reports
- CSV compare, merge and combine tools; 14-day free trial
Ask your account list a question
Account research used to end in a spreadsheet. Domain Manager puts the results where AI tools and your own systems can use them.
AI assistant
Ask questions about your DNS data in plain English and get recommendations. Included in every plan.
Claude, through MCP
Connect Claude with the MCP connector and ask the graph directly, from the tool your team already works in.
REST API
Domains, records, changes and exports, for your data warehouse or your own agents.
Salesforce and HubSpot
Sync accounts and findings to Salesforce. Push enriched companies to HubSpot.
CSV export
Any list, any filter, ready for the spreadsheet or the model you already use.
SIEM and webhooks
Change alerts delivered where your team already looks.
The AI assistant is in every Domain Manager plan. The REST API, MCP connector and CRM sync are on Enterprise and above.
Stop wasting hours on manual DNS lookups
Whether you are auditing domain portfolios, investigating security threats, researching competitive intelligence, or managing DNS records at scale, manual lookups cost time you do not have. DNSai's bulk tools, in the cloud or on your desktop, do the heavy lifting.
Fast
Process thousands of domains simultaneously. What used to take days now takes minutes.
Comprehensive data
Complete DNS records, DKIM keys, SPF and DMARC analysis, mail provider and hosting, in organised reports.
Built for security teams
Advanced filtering, reverse DNS, subdomain discovery, and email authentication sweeps across large domain sets.
Bulk domain discovery and DNS records scraper
Need a domain discovery tool for account research, or a way to scrape DNS records across an entire portfolio without writing code? Start with what you have: a CSV of account domains from your CRM, a pasted list, or a list of email addresses, which DNS Explorer’s Email Explorer turns into sender domains. Every A, MX, TXT, SPF, DKIM and DMARC record comes back in a structured report you can filter, compare and export. Sales teams use it to map which platforms target accounts run on; security teams use it to sweep thousands of domains for weak email authentication in a single pass.
Prefer one-at-a-time checks? Browse all of our free DNS tools.
Get started in three steps
- 1
Upload your account list
Import domains from CSV, a text file, or paste them directly into Domain Manager or DNS Explorer. No format restrictions.
- 2
Process in bulk
Every domain is queried for MX TXT SPF DKIM DMARC CNAME and more, all at once.
- 3
Export or sync results
Download organised CSV or PDF reports, push findings to your CRM or SIEM, or keep the list monitored for changes.
Which one fits the job?
Both run the same DNSai lookup engine. They differ in where the work happens and what surrounds it.
| Capability | DNSai Domain Manager | DNS Explorer |
|---|---|---|
| Where it runs | Cloud, any browser at app.dnsai.com | Native app on Windows 11 and macOS |
| Scale | Free tier to Enterprise Max; no limit on the top tiers (see plans below) | Unlimited, on your own hardware |
| Where your data lives | Your account, so lists can be monitored and re-scanned | Your machine only; nothing is uploaded |
| Change detection and alerts | ✓ continuous, with history | Re-scan saved lists in My Domains |
| Platform and vendor detection | ✓ thousands of SaaS signatures | Technology fingerprints in reports |
| DKIM selector discovery | ✓ DKIM analysis | ✓ hundreds of selectors per domain |
| Subdomain and reverse DNS lookups | Via lookup tools on dnsai.com | ✓ built in, IPv4 and IPv6 |
| Reports and export | CSV, domain profile reports, dashboards | CSV and branded PDF reports, compare and merge tools |
| AI assistant | ✓ ask your DNS data in plain English | ✗ |
| API, MCP connector, CRM sync | ✓ Enterprise and above | ✗ |
| Price | Free, $79/mo, $499/mo, Max tiers on request | 14-day trial, then $30/mo or $300/yr |
One list, six kinds of work
Account research
Sales and RevOps teams see which target accounts already run the platforms they integrate with, compete with or sell alongside, then push the list to the CRM.
Security audits
Investigate phishing campaigns, trace domain ownership, and identify security weaknesses across large domain sets.
Portfolio management
Monitor DNS health, track configuration changes, and manage hundreds or thousands of domains efficiently.
Email authentication
Bulk verify SPF, DKIM and DMARC records to keep deliverability high and meet security compliance.
Brand protection
Watch for domain squatting, typosquatting and trademark abuse. Detect and respond at scale.
IT infrastructure
Audit DNS across environments, plan migrations, and keep configurations consistent across the enterprise.
Bulk lookup that keeps watching
Add a list once and Domain Manager returns a full profile of every domain, then keeps it current: change alerts, platform detection, email authentication posture, and an AI assistant that answers questions about your data.
Domain manager
Import, organise and scan domains at any scale with folders, tags and bulk actions.
Deep DNS scanning
50+ record types including A, MX, SPF, DKIM, DMARC, BIMI and DNSSEC, in seconds.
Email authentication
Validate SPF, DKIM and DMARC. Detect the gateway vendor and the gaps.
Change detection
Know when a record changes. Track history and spot unauthorised edits.
Platform detection
See which SaaS platforms, mail providers and hosts each domain runs, from thousands of vendor signatures.
Reports, export and API
Domain profile reports, CSV exports, Salesforce and HubSpot sync, REST API and an MCP connector for Claude.
The desktop application for huge projects
DNS Explorer is a native application built for speed, privacy and reliability. Process massive domain lists without browser limitations or connectivity issues.
- Exceptionally fast: native performance processes thousands of domains in minutes
- Private by design: your domain data never leaves your machine
- No limits: every plan includes unlimited bulk lookups
- Local power: report merge, data compare and batch analysis that browsers cannot do
- Resource efficient: optimised memory and CPU use on standard hardware
Available for Windows 11 and macOS. Complete DNS Explorer features and pricing.
Nine DNS analysis utilities in one app
Domain QuickScan
The fastest bulk lookup: MX, TXT, DMARC, SPF, A and NS for up to 1,000,000 domains per scan, with validation and deduplication.
Advanced Lookup
Deep analysis with DKIM selector discovery and IP geolocation. Includes BIMI, SRV and SOA records.
Subdomain Lookup
Subdomain discovery using zone transfers, certificate transparency, MX and NS enumeration and pattern discovery.
Reverse DNS Lookup
PTR resolution, WHOIS, geolocation, DNSSEC validation and port scanning for IPv4 and IPv6.
Domain Profile Report
Presentation-ready PDF reports with your own branding for client deliverables, audits and compliance.
Email Explorer
Paste email addresses and analyse the DNS infrastructure of every sender domain automatically.
My Domains
A persistent workspace that saves your lists and custom DKIM selectors for regular re-scans.
Match / Compare / Merge
Merge two CSV files on a shared column such as domain, email, message ID or IP address.
Report CSV Combinator
Consolidate a folder of CSV reports into one file, handling encodings and column differences automatically.
Simple, transparent pricing
Start free on the cloud platform, or take a 14-day desktop trial. Monthly prices shown. Both products can be cancelled at any time; a cancelled plan stays active until the end of the billing period.
DNSai Domain Manager
CloudFree
No card required
- ✓Up to 100 domains, 100 scans a day
- ✓Full profile of each: records, mail, security, platforms
- ✓Change alerts, AI assistant, WHOIS, DKIM analysis
- ✓Reports & export
Pro
Billed monthly; yearly available
- ✓Up to 50,000 domains, 5,000 scans a day
- ✓Full profiles including changes, alerts on every domain
- ✓AI assistant, WHOIS, DKIM analysis
- ✓Reports, bulk CSV export
Enterprise
Billed monthly; yearly available
- ✓Up to 500,000 domains, 10,000 scans a day
- ✓Everything in Pro, at portfolio scale
- ✓Market intelligence, REST API, MCP connector for Claude
- ✓Salesforce and HubSpot sync
Enterprise Max tiers for millions of domains, yearly billing and the full feature matrix are at app.dnsai.com/pricing.
DNS Explorer
DesktopFree trial
Card required; $0 today, then $30/month
- ✓Unlimited DNS bulk lookups
- ✓All nine analysis utilities
- ✓Windows 11 and macOS
- ✓Cancel anytime
Monthly
Flexible monthly billing
- ✓Unlimited DNS bulk lookups
- ✓DKIM search, reverse DNS, subdomain discovery
- ✓CSV and PDF reports, compare and merge tools
- ✓Cancel anytime
Annual
- ✓Unlimited DNS bulk lookups
- ✓Two months free versus monthly
- ✓Everything in Monthly
- ✓Cancel anytime
Every DNS Explorer plan includes
- Desktop app for Windows and macOS
- Unlimited bulk domain lookups
- Comprehensive DNS lookups
- Advanced DKIM search
- DKIM, SPF and DMARC analysis
- Reverse DNS search
- Report export to CSV and PDF
- Data compare, merge and reporting
- Large domain batches, processed efficiently
- Cancel anytime
Every Domain Manager plan includes
- Full DNS scanning, 50+ record types
- DNS change detection
- AI assistant
- WHOIS lookups
- DKIM analysis
- Reports and export
Straight answers
What is bulk domain discovery for accounts?
It means taking a list of account domains and finding out, for all of them at once, what each one runs: mail provider, email gateway, security vendors, SaaS platforms, hosting and email authentication. DNSai reads this from public DNS records, so it works on any domain without access to the account.
What do I need to get started?
A list of domains: pasted, in a CSV or text file, or exported from your CRM. If you only have email addresses, DNS Explorer’s Email Explorer analyses the sender domains. The first 100 domains in Domain Manager are free and need no card.
Is a DNS record proof that an account is a customer of that vendor?
No. It proves the domain published the vendor’s record, which is what turns the product on. It does not show seats, spend or whether the contract is live.
Can AI tools use the results?
Yes. Every Domain Manager plan includes an AI assistant that answers questions about your domains in plain English. On Enterprise, a REST API and an MCP connector let Claude and your own agents query the data directly.
Does DNSai sell contacts?
No. DNSai tells you what domains run and how they are configured. Pair it with your contact provider for people.
Which bulk DNS lookup tool should I use?
Use DNSai Domain Manager when you want a portfolio that stays monitored: cloud scanning, change alerts, platform detection, reports, and an API. Use DNS Explorer when a project needs local processing on your own machine with no lookup limits, DKIM selector discovery, subdomain and reverse DNS tools, and PDF reports. Many teams use both.
How many domains can I look up?
As many as your plan allows. Domain Manager is free to start and has no domain limit on its top tiers; each tier is listed in the plan table and at app.dnsai.com/pricing. DNS Explorer has no lookup limit and runs entirely on your own hardware.
What records does a bulk lookup return?
Both tools return A, AAAA, MX, NS, TXT, SPF, DKIM and DMARC records. Domain Manager reads 50+ record types including BIMI and DNSSEC and adds mail provider, hosting and platform detection. DNS Explorer’s Advanced Lookup adds DKIM selector discovery, IP geolocation, BIMI, SRV and SOA records.
Does my domain list leave my machine?
With DNS Explorer, no: every lookup runs locally on Windows or macOS and results stay on your computer. With Domain Manager, your list is stored in your account at app.dnsai.com so it can be monitored and re-scanned on a schedule.
What does each product cost?
Domain Manager is free for 100 domains, $79 a month for Pro and $499 a month for Enterprise, with yearly billing available at app.dnsai.com/pricing. DNS Explorer has a 14-day free trial, then $30 a month or $300 a year. Both can be cancelled at any time.
Can I export the results?
Yes. Domain Manager exports CSV and domain profile reports, with bulk export on Pro and above and API access on Enterprise. DNS Explorer exports organised CSV and PDF reports and includes Match/Compare/Merge and CSV Combinator utilities for working with the output.
See what your accounts run. Start with 100 domains.
Add your list and get a full profile of every domain in minutes: in the cloud with Domain Manager, free for the first 100 domains, or on the desktop with DNS Explorer.
