Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
gsmsince1927.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Checked via [email protected]
· 2026-03-22 05:33:23 UTC · ↺ Refresh
MX Hostnames
- gsmsince1927-com.mail.protection.outlook.com
MX Priorities
- gsmsince1927-com.mail.protection.outlook.com: 10
A / AAAA Records
- 23.96.179.255 (no PTR)
Mail Server IPs
- 52.101.11.2 ↩ mail-sn1pr03cu00102.inbound.protection.outlook.com
- 52.101.50.4 ↩ mail-co1pr03cu00404.inbound.protection.outlook.com
- 52.101.50.7 ↩ mail-co1pr21cu00207.inbound.protection.outlook.com
- 52.101.11.19 ↩ mail-sa9pr04cu00203.inbound.protection.outlook.com
- 2a01:111:f403:c903::3 ↩ mail-mw2pr02cu00503.inbound.protection.outlook.com
- 2a01:111:f403:c91d:: ↩ mail-mw2pr04cu00100.inbound.protection.outlook.com
- 2a01:111:f403:c92c::3 ↩ mail-dm5pr04cu00103.inbound.protection.outlook.com
- 2a01:111:f403:f804::1 ↩ mail-co1pr05cu00301.inbound.protection.outlook.com
SOA Record
Raw SOA
dns31.cloudns.net support.cloudns.net 2024020203 7200 1800 1209600 3600
Primary NS (mname)
dns31.cloudns.net
Admin Email (rname)
support@cloudns.net
Serial
2024020203
Refresh
7200s
Retry
1800s
Expire
1209600s
Minimum TTL
3600s
Nameservers (NS)
dns34.cloudns.net
dns31.cloudns.net
dns33.cloudns.net
dns32.cloudns.net
SPF Record
✓ Strict (-all)
v=spf1 mx ip4:108.169.142.74 ip4:108.169.142.75 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:spf.constantcontact.com -all
📊 DNS lookups: 4/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none;
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
⚠ No aggregate reports (rua= not set)
DKIM Selectors
✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 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
6 records- google-site-verification=UqSbJH_S1e8NfYrEo9D_Yb7En1mZOXnz0lhc1_eUnXI
- SPFv=spf1 mx ip4:108.169.142.74 ip4:108.169.142.75 include:spf.ess.barracudanetworks.com include:spf.protection.outlook.com include:spf.constantcontact.com -all
- +42cwRAPrtM1UXuiCpixpZL4LpkPV9IMrTZJxWK5SBL1h4rF4dUmEGWYfX/aoPdOnybsluTKQLo4bJgOKVAhHg==
- MS=ms27220270
- google-site-verification=3iFRCwKuvq44iO6MSTj1qKukWj10SE97frjVJfmcPP8
- apple-domain-verification=ezTmUnqpQIOaXBft
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 gsmsince1927.com
SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.
No credit card required
Get 1,000 Free Credits