Domain Lookalike Detection

Your Domain Is Being Impersonated. Do You Know Which Ones?

Attackers register lookalike domains to phish your customers, intercept your email, and damage your reputation. DMARClytics detects them within hours of registration — before they're used against you.

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13,000+
lookalike domains registered every day
94%
of phishing attacks use a domain lookalike
47 days
average time before a lookalike is used
£4.2M
average cost of a brand impersonation incident
The Blind Spot

Lookalike Domains Are the Blind Spot in Your Security

DMARC stops attackers from spoofing your domain in email headers. But what about the domains that look like yours?

Every day, attackers register domains like:

yourcompany-support.com
yourcornpany.com ("rn" instead of "m")
yourcompany.co (different TLD)

These domains operate entirely outside your control. They don't trigger your DMARC policies. And most companies don't know they exist until a customer reports being phished.

They're used to:

Send phishing emails to your customers
Using a domain that looks like yours to send credential-harvesting emails that pass spam filters.
Build fake login pages
Harvest usernames and passwords from users who trust a URL that resembles your official domain.
Impersonate executives in BEC attacks
Business email compromise using 'CEO' email from ceo@yourcompany-corp.com — impossible to detect without lookalike monitoring.
Damage your brand reputation
Every victim who gets phished from a lookalike associates the attack with your brand — even though you had nothing to do with it.
Attack Taxonomy

Every Type of Domain Attack, Covered

Attackers have a playbook. We know every technique they use to impersonate your brand — and we monitor for all of them.

Typosquatting

dmarclytics.io → dmarclytcs.io

Common keyboard errors and letter transpositions. Attackers register the most likely typos of your domain and sit waiting for misdirected traffic or email.

Homograph / Lookalike Characters

dmarclytics.io → dmarclytícs.io

Unicode characters that look identical to standard letters — an "í" instead of an "i", or a Cyrillic "а" instead of a Latin "a". Invisible to the human eye.

TLD Variations

dmarclytics.com → dmarclytics.net / .co

Registering your brand name across dozens of alternative TLDs. Commonly used to intercept traffic and launch credential phishing campaigns.

Prefix / Suffix Additions

dmarclytics.io → secure-dmarclytics.io

Adding words like "secure", "login", "support", or regional suffixes around your brand name to create convincing phishing pages.

Subdomain Abuse

dmarclytics.attacker.com

Using your legitimate domain as a subdomain of an attacker-controlled domain — builds convincing phishing pages that include your real brand name in the URL.

Phonetic Lookalikes

dmarclytics.io → dmarklytics.io

Domains that sound identical when spoken aloud but are spelled differently. Effective in vishing attacks and when victims type what they hear.

Process

How Lookalike Detection Works

Fully automated. No manual searching. No false positives from irrelevant domains.

01

Continuous Domain Scanning

We monitor newly registered domain feeds, certificate transparency logs, and passive DNS data 24/7 — catching lookalike registrations within hours, not weeks.

02

AI-Powered Similarity Scoring

Each discovered domain is scored for visual similarity, phonetic match, and structural resemblance. You only see what matters — not thousands of irrelevant results.

03

Threat Intelligence Enrichment

For each flagged domain: Is it hosting a website? Sending email? On any blocklists? Seen in phishing campaigns? Full context, instantly.

04

Instant Alerts & Takedown Guidance

Get alerted the moment a high-risk lookalike is detected. We provide registrar details, WHOIS data, and step-by-step takedown instructions.

Dashboard

Your Lookalike Dashboard

Every flagged domain, scored and prioritised — so you always know what to act on first.

Detected Lookalike Domains
Monitoring: yourcompany.comLive
DomainRisk

dmarclytcs.io

Typosquat

Sending emailActive siteCritical

dmarcIytics.io

Homograph

Active siteCritical

secure-dmarclytics.io

Prefix

Sending emailActive siteHigh

dmarclytics.net

TLD Variant

High

dmarclytics.co

TLD Variant

Medium

dmarklytics.io

Phonetic

Medium
Showing 6 of 23 detected domains · Updated 4 minutes agoView all →
Email activity detected
Highest-signal threat — lookalike is actively sending
Active site
Website is live — check for brand impersonation
Risk score
AI-calculated similarity + threat intel combined
Features

Everything You Need to Protect Your Brand

Real-Time Discovery

Newly registered lookalike domains appear in your dashboard within hours of registration — before they're weaponised.

Risk Scoring

Every domain is automatically scored by visual similarity, mail activity, and threat intelligence. Focus on what's actually dangerous.

Email Activity DetectionKey signal

Know immediately if a lookalike domain is sending email — the clearest signal that an active phishing campaign has started. This is the highest-signal threat indicator.

Website Monitoring

We check whether lookalike domains are hosting websites, what those sites contain, and whether they're impersonating your brand.

Instant Alerts

Get notified by email or Slack the moment a high-risk domain is detected. No manual checking required.

Takedown Assistance

One-click access to registrar contact details, abuse report templates, and guidance on escalating to ICANN or legal counsel.

Differentiation

Lookalike Detection That Fits Your DMARC Workflow

Most brand protection tools operate in isolation. DMARClytics integrates lookalike detection with your email authentication monitoring — giving you one dashboard for:

Domain spoofing — Who's forging your domain in email headers (DMARC)
Domain impersonation — Who's registered domains that look like yours (Lookalike Detection)

See both attack vectors in one place. Correlate threats. Respond faster.

Brand Protection Tools
DMARClytics
Lookalike domain detection
DMARC aggregate report analysis
SPF / DKIM monitoring
Unified dashboard
Email auth + brand protection
Separate products
One platform

Built for Teams That Can't Afford Brand Damage

Security Teams

Visibility into external threats.

See lookalike domains alongside your DMARC data. Prioritise response by actual risk — email activity, active sites, threat intel — not noise.

  • Unified threat dashboard
  • Risk-scored prioritisation
  • DMARC + lookalike correlation
IT & Email Admins

Brand protection without another tool.

Lookalike detection lives in the same dashboard as your email authentication. No new vendor, no new login.

  • Single-pane-of-glass visibility
  • Automated alerts — no manual checks
  • Same platform as DMARC monitoring
Marketing & Brand

Protect customer trust.

Know when someone is using your brand name to deceive your audience — before customers report it to you.

  • Early warning on impersonation
  • Takedown templates ready to send
  • Protect campaign sender reputation

Common Questions

How many domains do you monitor?

We scan newly registered domain feeds, certificate transparency logs, and passive DNS databases — covering millions of new domain registrations per day across all major TLDs and a growing list of country-code TLDs.

How quickly will I find out about a new lookalike?

In most cases within 2–6 hours of registration. We process newly registered domain feeds continuously and cross-reference certificate transparency logs in near real-time.

Can I monitor more than one domain?

Yes. You can monitor as many domains as your plan allows. Agencies and enterprises can monitor unlimited domains from a single dashboard.

What happens when a high-risk domain is found?

You'll receive an instant alert with the domain name, similarity score, registrar details, WHOIS data, and any threat intelligence we've found. If it's sending email, we flag that immediately as critical risk.

Can you help me take down a lookalike domain?

We provide registrar abuse contact details, pre-filled abuse report templates, and guidance on escalating via ICANN, legal counsel, or brand protection services. Full takedown execution is available on our Enterprise plan.

What's the difference between domain spoofing and domain lookalikes?

Domain spoofing is when attackers forge your exact domain in email headers — DMARC protects against this. Domain lookalikes are entirely separate domains that resemble yours — they require different detection and response. DMARClytics monitors both.

How do you detect if a lookalike domain is sending email?

We check for MX records and monitor for active email sending patterns. If a lookalike domain has email capability, we flag it as high risk — that's often a sign of an active or imminent phishing campaign.

Do I need to buy this separately from DMARC monitoring?

Lookalike detection is included in Professional and Agency plans alongside full DMARC monitoring. See our pricing page for details.

Part of the Complete DMARClytics Platform

Lookalike detection works alongside your DMARC monitoring, SPF/DKIM management, and Guardian AI — giving you full visibility into email-based threats to your domain.

DMARC Management

Monitor and enforce email authentication across all your domains.

Guardian AI

Ask questions about your domain in plain English. Get answers with exact fix instructions.

Spam & Inbox Testing

Test deliverability and spam score before you send — not after a campaign has already failed.

Find Out Who's Impersonating You — Right Now

Start a free scan and see every lookalike domain targeting your brand. Setup takes 2 minutes. Continuous monitoring from day one.

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No credit card required · Free plan available · Alerts via email or Slack