Mail Security & Deliverability Checker

Free online tools to test SPF, DKIM, DMARC, MX records, DNS blacklists, reverse DNS and SMTP/STARTTLS. Run a one-click Mail Security Check, get a 0–10 score with per-record findings and download a shareable PDF report.

Mail Security Anti-Spoof Inbound Health MX SPF DMARC DKIM DNS PTR Blacklist SMTP Relay WHOIS Headers

WHOIS — gmail.com

Server: whois.verisign-grs.com · Elapsed: 539.2 ms
Domain Name: gmail.com
Registry Domain ID: 4667231_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.markmonitor.com
Registrar Registration Expiration Date: 2027-08-12T07:00:00.000+00:00
Registry Expiry Date: 2027-08-12T00:00:00.000+00:00
Creation Date: 1995-08-13T07:00:00.000+00:00
Updated Date: 2026-07-11T10:11:23.000+00:00
Registrant Contact URL: https://domains.markmonitor.com/whois/contact/gmail.com
Registrant Name: REDACTED REGISTRANT
Registrant Organization: REDACTED FOR PRIVACY
Registrant Street: REDACTED FOR PRIVACY
Registrant City: REDACTED FOR PRIVACY
Registrant State/Province: CA
Registrant Postal Code: REDACTED FOR PRIVACY
Registrant Country: US
Registrant Phone: REDACTED FOR PRIVACY
Registrant Email: REDACTED FOR PRIVACY
Tech Contact URL: https://domains.markmonitor.com/whois/contact/gmail.com
Registrar Organization: Markmonitor Inc.
Registrar Street: 3540 E Longwing Ln
Registrar City: Meridian
Registrar State/Province: ID
Registrar Postal Code: 83646
Registrar Country: US
Registrar Contact URL: https://www.markmonitor.com/contact-us/
Registrar: Markmonitor Inc.
Registrar IANA ID: 292
Registrar Abuse Contact: https://corp.markmonitor.com/domain/ui/abuse-report
Registrar Abuse Contact Phone: +1.2086851750
Registrar Abuse Contact Name: Markmonitor Inc.
Domain Status: clientUpdateProhibited
Domain Status: clientTransferProhibited
Domain Status: clientDeleteProhibited
Domain Status: serverUpdateProhibited
Domain Status: serverTransferProhibited
Domain Status: serverDeleteProhibited
Name Server: ns1.google.com
Name Server: ns2.google.com
Name Server: ns3.google.com
Name Server: ns4.google.com
Name Server Status: active
Name Server Last Changed: 2008-06-08T02:46:38.000+00:00 (most recent)
DNSSEC: unsigned
URL of the ICANN WHOIS Data Problem Reporting System: http://wdprs.internic.net/