Domain Overview
DNS: ✓ 20d ago
Checker: ✓ 20d ago
concretecontractorcary.com
Yes
✓ Yes
Mailgun
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-05-21 11:28:34 UTC · ↺ Refresh
MX Hostnames
- mxb.mailgun.org
- mxa.mailgun.org
MX Priorities
- mxb.mailgun.org: 10
- mxa.mailgun.org: 10
A / AAAA Records
- 185.151.30.211 ↩ 185-151-30-211.ptr4.stackcp.net
- 2a07:7800::211 (no PTR)
Mail Server IPs
- 34.149.254.5 ↩ 5.254.149.34.bc.googleusercontent.com
- 34.36.182.139 ↩ 139.182.36.34.bc.googleusercontent.com
SOA Record
Raw SOA
ns1.ntcloudhosting.com hostmaster.stackdns.com 1759847176 1800 900 1209600 300
Primary NS (mname)
ns1.ntcloudhosting.com
Admin Email (rname)
hostmaster@stackdns.com
Serial
1759847176
Refresh
1800s
Retry
900s
Expire
1209600s
Minimum TTL
300s
Nameservers (NS)
ns4.ntcloudhosting.com
ns2.ntcloudhosting.com
ns1.ntcloudhosting.com
ns3.ntcloudhosting.com
SPF Record
✓ Soft Fail (~all)
v=spf1 include:mailgun.org ~all
📊 DNS lookups: 1/10
~ 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
2 records- google-site-verification=rGfj2FL4Iok0egPjdWKcQlV1hXYZXVo7jXigK_QhuOk
- SPFv=spf1 include:mailgun.org ~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 concretecontractorcary.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits