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Read-only monitoring · DNSly never sends email

Stop losing
deliverability to
blacklists you
never saw.

DNSly monitors your sending domains across 35+ public blacklists, audits SPF / DKIM / DMARC, and pings you the moment something breaks — before Gmail does.

No credit cardSetup in 60 seconds35+ DNSBLs monitored
dnsly · live scanLIVE
$dnslyscanacme-outbound.com
DNS Health Score
0/100
Lists Checked
0/35
Blacklist lookups4.8s
  • ● CLEANSpamhaus ZENno record
  • ● CLEANSpamCopno record
  • ● CLEANBarracudano record
  • ● LISTEDUCEPROTECT-L2LISTED
  • ● CLEANSpamhaus CSSno record
  • ● CLEANSORBSno record
  • ● SCANPSBLPENDING
  • ● CLEANSURBLno record
  • ● CLEANNordSpamno record
ALERT · 14:32
UCEPROTECT-L2 listed
GMAIL · INBOX
Delivery 94/100
SPAMHAUS · ZENSPAMCOP · BLBARRACUDAUCEPROTECT-L1UCEPROTECT-L2UCEPROTECT-L3SORBS · DNSBLPSBLSURBLURIBL · BLACKURIBL · REDMAILSPIKENORDSPAMINTERSERVERMANITUS5HSEM-FRESHABUSE.ROSPFBLOSPAMEFNET-RBLCSS · SPAMHAUSXBL · SPAMHAUSSPAMHAUS · ZENSPAMCOP · BLBARRACUDAUCEPROTECT-L1UCEPROTECT-L2UCEPROTECT-L3SORBS · DNSBLPSBLSURBLURIBL · BLACKURIBL · REDMAILSPIKENORDSPAMINTERSERVERMANITUS5HSEM-FRESHABUSE.ROSPFBLOSPAMEFNET-RBLCSS · SPAMHAUSXBL · SPAMHAUS
35+
Public DNSBLs monitored
0–100
DNS health score per domain
<5s
Real-time lookup latency
6
Mailbox providers scored
Two modules · one dashboard

Everything your sending infrastructure needs.

Continuous blacklist surveillance and instant DNS audits for the domains you already send from. Read-only — we inspect public records, we never send mail.

35 public DNSBLs

Always-on blacklist surveillance.

DNS-based lookups against every meaningful free public blacklist — IP, domain, and regional. Parallel execution, sub-5s sweeps, full history per list.

Spamhaus ZENSpamCopBarracudaUCEPROTECT-L1UCEPROTECT-L2UCEPROTECT-L3SORBSPSBLSURBLURIBL.blackURIBL.redMailspikeNordSpamSpamratsInterServerManitus5hSEM-FreshAbuse.roSPFBLOspamEFNet-RBLSpamhaus CSS+12 more
Instant 0–100 audit

DNS Health Score.

One number that summarizes SPF, DKIM, DMARC, MX, rDNS, and BIMI — with the fix for every failing check.

0
DNS Health
Google · Microsoft · Yahoo · Apple · Zoho · Proton

Per-provider scoring.

Not every blacklist matters equally at every inbox. We map each DNSBL to the providers that actually consult it — so you know exactly where you'll bounce.

GMAIL
0
OUTLOOK
0
YAHOO
0
ICLOUD
0
ZOHO
0
PROTON
0
Actionable fixes

Tells you what to fix, in order.

Every failing check comes with the exact record value, recommended TTL, and a copy-paste fix for your DNS provider.

✓ PASSSPFv=spf1 include:_spf.google.com ~all
✓ PASSDKIMselector1 · 2048-bit · valid
! WARNDMARCp=quarantine pct=100
✓ PASSMX5 records · gmail-smtp-in
✓ PASSrDNSmail.acme.com matches
✕ FAILBIMIno record found
Try it now · no signup

Run a free check.

◆ 35 lists  ◆ DNS audit  ◆ ~5s

Tip: try a domain you actually send from. We resolve the sending IP automatically.

How it works

Up and running in 60 seconds.

01
Add your domain

Paste your domain or sending IP. We resolve it automatically.

02
Instant audit

SPF, DKIM, DMARC, rDNS, and 35+ blacklist lookups in under 5 seconds.

03
Get your score

A 0–100 health score per domain and per mailbox provider, updated daily.

04
Track your trend

See DNS score history and blacklist changes over time on your dashboard.

Why teams trust DNSly

Built for email deliverability teams.

Every check runs against live public DNS and blocklist data. Real feature depth, not marketing fluff.

35+
Blacklists Monitored

Comprehensive coverage of major blocklists including Spamhaus, Barracuda, and SURBL.

10
DNS Health Checks

SPF, DKIM, DMARC, rDNS, MX, and advanced checks like MTA-STS and BIMI.

7
Provider Scores

Reputation scored per mailbox provider: Gmail, Outlook, Yahoo, and more.

Daily
Automated Scans

Your domains are checked every day. Catch blacklistings before they kill deliverability.

✓No fake data — all checks run in real time
✓Checked against authoritative DNS sources
✓Read-only — we never send email or touch your mailbox
Pricing

Simple, transparent pricing.

Start free. Upgrade when you need more domains and richer reports.

Free
$0/month

Kick the tires.

  • 3 domains
  • Daily blacklist scan
  • DNS health score
  • Provider reputation scores
Most popular
Starter
$29/month

Solo SDRs and small teams.

  • 10 domains
  • Daily blacklist scan
  • Fix-It record generator
  • 365-day history
Pro
$79/month

Agencies and power users.

  • 50 domains
  • Daily blacklist scan
  • Fix-It record generator
  • DMARC aggregate reports
FAQ

Common questions.

Everything you need to know before you start.

27,431 domains scanned today· 1,238 listings detected

Your domains are
being blacklisted
right now.

You just don't know it yet. Run a free check — 5 seconds, no signup.