Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
harkinsbuilders.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-18 18:45:36 UTC · ↺ Refresh
MX Hostnames
- harkinsbuilders-com.mail.protection.outlook.com
MX Priorities
- harkinsbuilders-com.mail.protection.outlook.com: 0
A / AAAA Records
- 70.32.23.75 ↩ mi3-tr2.supercp.com
Mail Server IPs
- 52.101.194.13 ↩ mail-ch0pr04cu00605.inbound.protection.outlook.com
- 52.101.194.0 ↩ mail-ch5pr02cu00200.inbound.protection.outlook.com
- 52.101.40.24 ↩ mail-cy5pr05cu00100.inbound.protection.outlook.com
- 52.101.42.14 ↩ mail-mw2pr04cu00106.inbound.protection.outlook.com
- 2a01:111:f403:f907::1 ↩ mail-dm1pr04cu00201.inbound.protection.outlook.com
- 2a01:111:f403:c801::1 ↩ mail-sn1pr0501cu00101.inbound.protection.outlook.com
- 2a01:111:f403:f804::2 ↩ mail-co1pr05cu00402.inbound.protection.outlook.com
- 2a01:111:f403:f908::1 ↩ mail-bn1pr04cu00101.inbound.protection.outlook.com
SOA Record
Raw SOA
dana.ns.cloudflare.com dns.cloudflare.com 2399227685 10000 2400 604800 1800
Primary NS (mname)
dana.ns.cloudflare.com
Admin Email (rname)
dns@cloudflare.com
Serial
2399227685
Refresh
10000s
Retry
2400s
Expire
604800s
Minimum TTL
1800s
Nameservers (NS)
dana.ns.cloudflare.com
will.ns.cloudflare.com
SPF Record
✓ Soft Fail (~all)
v=spf1 ip4:72.81.248.226/24 include:spf.protection.outlook.com include:spf.exclaimer.net include:constantcontact.com ~all
📊 DNS lookups: 3/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; rua=mailto:[email protected]
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 4 found
selector1._domainkey
selector2._domainkey
s1._domainkey
s2._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: selector1
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
14 records- hlhillk913aa6gh58fqr8vucmp
- kbi7aqi1q39qq6fri57rivl5pf
- openai-domain-verification=dv-8tTm9Yx3Y3QWteBD7m4OkaoK
- SPFv=spf1 ip4:72.81.248.226/24 include:spf.protection.outlook.com include:spf.exclaimer.net include:constantcontact.com ~all
- MS=ms81256087
- apple-domain-verification=N4eY8i7yueXDNuFf
- bk9901o0ig33d3ukfrolica7pr
- bw=jIimkj7gIPo5iF8eQ6dlRE4Ir7gC24k+12RuuRSsQnUn
- d365mktkey=2pfmz3fjog0dwt651siry17q7
- d365mktkey=3chfixukeiiqrmvhb54oe9fz0
- d365mktkey=kXxSZwxDLtoWdruy3SXDn2QNxEqtb8MhwBwRwvgy0QYx
- d365mktkey=yisds0told757ijkgln3ow9a
- docusign=0d86461f-0ace-4b42-ac3d-cfb0f00feeb7
- google-site-verification=Jf7Z_-QNaALtDONhIYEX42eEwDIm_xWGiwdqNqRXEis
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
See demo & docs
Deep verification
Full email verification for harkinsbuilders.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits