SSL, domain & DNS monitoring

Don't find out your SSL expired
when your customers do.

Auto-renewal fails silently. Certly watches what your server actually serves — and warns you before it's a crisis.

Instant result · No login required · or explore the live demo →

Certly checks what your servers actually serve — SSL, domain expiry, DNS, DNSSEC. When something is about to expire, you know — weeks before your customers could.

Try the live demo → Real checks, no sign-up

Monitors

0 / 2 — free plan

Add monitor

HostSSL expiryDomain expiryDNS
No monitors yet — add your first above.

Dashboard

My Workspace
Monitoring3
OK3
Warning0
Critical0
HostSSL expiryDomain expiryDNS
api.finchpay.io
287d312d89d
blog.quillnotes.io
142d—no DNSSEC
shop.solstice-supply.com
31d45d21d

Dashboard

My Workspace
Monitoring3
OK2
Warning1
Critical0
HostSSL expiryDomain expiryDNS
api.finchpay.io
287d312d89d
blog.quillnotes.io
142d—no DNSSEC
shop.solstice-supply.com
18d45d21d
CertlyApp9:04 AM
⚠️ SSL certificate for shop.solstice-supply.com expires in 18 days
Reminders follow at 14, 7, and 1 day out
Email · ops@yourco.com — [Certly] 1 certificate needs attention

Dashboard

My Workspace
Monitoring3
OK3
Warning0
Critical0
HostSSL expiryDomain expiryDNS
api.finchpay.io
287d312d89d
blog.quillnotes.io
142d—no DNSSEC
shop.solstice-supply.com
90d45d21d

✓ Renewed with 18 days to spare — your customers never noticed.

Click a step to jump around — or skip ahead and try the live demo →
Product preview

Everything expiring, at a glance

One dashboard. SSL certs, domain expiry, and DNS/DNSSEC for all your sites — with a timeline of every DNS change. Alerts before anything lapses.

certly.dev/app

Dashboard

My Workspace
Add monitor
Monitoring6
OK3
Warning2
Critical1
HostTypeSSL expiryDomain expiryDNS
api.finchpay.io
SSL + Domain287d312d89d
shop.solstice-supply.com
SSL + Domain18d45d21d⚠ Changed
blog.quillnotes.io
SSL142d—no DNSSEC
admin.meridiancorp.net
SSL + Domain2d190d78d⚠ Changed
docs.stackform.dev
SSL + Domain22d8d120d
legacy.meridiancorp.net
SSL + Domain———

Recent DNS activity

Last 30 days
  • admin.meridiancorp.netNSNS record changed
    ns1.legacyhost.net→ns1.dnspark.net
  • shop.solstice-supply.comMXMX record removed
    10 mail.solstice-supply.com
  • api.finchpay.ioAA record changed
    203.0.113.10→203.0.113.24
  • docs.stackform.devTXTTXT record added
    v=spf1 include:_spf.google.com ~all

Monitors

4 / 25 — pro plan

Add monitor

4 / 25
SSL + Domain▾
Add & check
HostTypeSSL expiryDomain expiryDNS
api.finchpay.io
SSL + Domain287d312d89d
DetailsEditDelete
shop.solstice-supply.com
SSL + Domain18d45d21d⚠ Changed
DetailsEditDelete
blog.quillnotes.io
SSL142d—no DNSSEC
DetailsEditDelete
admin.meridiancorp.net
SSL + Domain2d190d78d⚠ Changed
DetailsEditDelete
← Monitors

admin.meridiancorp.net

Next expiry — SSL certificate in 2d
Edit in Monitors

Expiry monitoring

Domain · SSL · DNSSEC
Domain registration
190d2026-12-21 00:00 UTC
SSL certificate
2d2026-06-16 11:30 UTC
DNSSEC signature
78d2026-08-31 00:00 UTC

DNS Activity

⚠ Recent dangerous changeLast 30 days
  • NSNS record changed
    ns1.legacyhost.netns2.legacyhost.net→ns1.dnspark.netns2.dnspark.net
  • AA record changed
    198.51.100.7→198.51.100.42

Current DNS records

Captured 2026-06-14 02:00 UTC
A
198.51.100.42
AAAA
2001:db8::42
MX
10 mail.meridiancorp.net
NS
ns1.dnspark.netns2.dnspark.net
TXT
v=spf1 include:_spf.meridiancorp.net ~all

Notifications

Alert channels — pro plan

Add notification channel

Slack webhook▾
Add
TypeDestinationStatus
Emailalerts@finchpay.ioActiveRemove
Slack webhookhooks.slack.com/services/T0AB/B0…ActiveRemove
Discord webhookdiscord.com/api/webhooks/123…ActiveRemove
Custom webhookhooks.stackform.dev/certlyDisabledRemove
Check your domain free → Instant result · No login required

Why now

Certificates are about to expire 8× more often.

Browsers and CAs are cutting how long a certificate can live — from 398 days down to 47 by 2029. That means 8× more renewals, and 8× more chances for one to fail quietly.

2025
398 days
Now
200 days
2027
100 days
2029
47

Set by the CA/Browser Forum, backed by Chrome, Safari, and Firefox. Nobody gets to opt out.

Why Certly

Checks what your server actually serves
Other tools check the paperwork. Certly checks what your visitors' browsers actually see — so if auto-renewal ran but the new cert never made it to the server, you hear about it before they do.
Staged alerts: 30, 14, 7, and 1 day out
Slack, Discord, or email. Enough runway to act before it becomes an emergency call from a client.
DNSSEC expiry, watched too
DNSSEC breaks quietly — and when it does, your whole site stops loading for everyone. Certly tracks signature (RRSIG) expiry, ignores healthy auto-rotation, and alerts the moment signatures stall, expire, or fail validation.
Every DNS change, on a timeline
A record changed, MX removed, NS swapped — Certly records each DNS change newest-first and flags the dangerous ones, so a silent hijack or misconfig never slips by.

How Certly compares

Uptime tools tell you when you're down. Certly warns you before you are.

Certly UptimeRobot Better Stack DIY reminders
SSL expiry alerts (30, 14, 7, and 1 day out) ✓ ✓ ✓ —
Checks the certificate your server actually serves ✓ ✓ ✓ —
Domain expiry monitoring ✓ ✓ ✓ —
DNS record change alerts ✓ Paid plans only ✓ —
DNS change history, on a timeline ✓ — — —
DNSSEC signature (RRSIG) validation ✓ — — —
Email spoofing exposure (DMARC / SPF) ✓ — — —

Based on each vendor's public documentation and pricing as of July 2026. UptimeRobot and Better Stack are excellent uptime tools — Certly goes deeper on the expiry and DNS side.

Pricing

Free
$0
2 sites · No credit card required
Monitor 2 sites free
Pro
$12 / mo
25 sites · Slack, Discord, email
Start with Pro
Business
$39 / mo
150 sites · Client grouping
Start with Business
Compare all plans →

Is your site 10 seconds from a red warning page?

See what your visitors' browsers see — SSL, domain, and email spoofing exposure. Free, no login.

Instant result · No login required
Live demo — real checks, throwaway sandbox
Open in new tab ↗