Live data — DNS records and disposable check were just fetched and saved.
Domain Overview
DNS: ⚡ live
Checker: ⚡ live
irsdemo.com
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-06-03 09:20:46 UTC · ↺ Refresh
MX Hostnames
- mx1-us1.ppe-hosted.com
- mx2-us1.ppe-hosted.com
MX Priorities
- mx2-us1.ppe-hosted.com: 10
- mx1-us1.ppe-hosted.com: 0
A / AAAA Records
- 151.101.66.159 (no PTR)
Mail Server IPs
- 67.231.154.163 ↩ mx2-us1.ppe-hosted.com
- 148.163.129.51 ↩ mx2-us1.ppe-hosted.com
- 67.231.154.162 ↩ mx1-us1.ppe-hosted.com
- 148.163.129.50 ↩ mx1-us1.ppe-hosted.com
SOA Record
Raw SOA
ns3.worldnic.com namehost.worldnic.com 125040918 10800 3600 604800 3600
Primary NS (mname)
ns3.worldnic.com
Admin Email (rname)
namehost@worldnic.com
Serial
125040918
Refresh
10800s
Retry
3600s
Expire
604800s
Minimum TTL
3600s
Nameservers (NS)
ns3.worldnic.com
ns4.worldnic.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:zcsend.net a:dispatch-us.ppe-hosted.com ip4:149.72.71.205 ip4:69.75.246.106 include:protection.outlook.com include:spf.dynect.net include:authsmtp.com ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ MissingNo DMARC record — emails cannot be rejected on auth failure.
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
5 records- 6osptk8bgbs3i95vuluotdsjeo
- EPA41GjutoUxeZt6oMPBsRJfLiPbp83cCrhy0fZF3sSb8jnpUk8MHzRNz/vwi6q24kW+uxd44SpGtvaHksD5Rw==
- MS=ms47285304
- MS=63C14F622AD910FCBBD9AC44C6D9C70723725598
- SPFv=spf1 include:zcsend.net a:dispatch-us.ppe-hosted.com ip4:149.72.71.205 ip4:69.75.246.106 include:protection.outlook.com include:spf.dynect.net include:authsmtp.com ~all
Free · No signup required
Add email validation to your forms
Block disposable emails, validate MX records, detect role accounts — unlimited, forever free.
<script src="https://check.verifyswift.com/"></script>
One line of code · Works on any site · Customize →
See demo & docs
Deep verification
Full email verification for irsdemo.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits