Email Domain Lookup

Browse our comprehensive directory of popular email domains with detailed MX records, SPF, DKIM, DMARC authentication data, and mail server information. Research any domain before sending.

2,731 Domains Indexed
SPF, DKIM, DMARC Checks
MX Record Analysis
All (2,731) Freemail (200) Disposable (589) Corporate (1,134) Government (113) Education (431) Isp (264)
Domain ▲ Type Organization Mail Server Status
raytheon.com corporate RTX Corporation Proofpoint Active View
razer.com corporate Razer Inc. Microsoft 365 Active View
rccc.edu education Rowan-Cabarrus Community College Microsoft 365 Active View
rcn.com isp RCN Corporation rcn.com Active View
rcpt.at disposable — trashmail.com Active View
reallymymail.com disposable — None Inactive View
realogy.com corporate Realogy Holdings Corp. Mimecast Active View
receiveee.com disposable — None Active View
reckitt.com corporate Reckitt Benckiser Mimecast Active View
recode.me disposable — None Active View
recursor.net disposable — spamgourmet.com Active View
recyclemail.dk disposable — thirdechelon.net Active View
redcross.org corporate American Red Cross Microsoft 365 Active View
reddit.com corporate Reddit Inc. Google Workspace Active View
redfin.com corporate Redfin Corporation Google Workspace Active View
redhat.com corporate Red Hat/IBM Mimecast Active View
rediffmail.com freemail Rediff.com India akadns.net Active View
redlands.edu education University of Redlands Microsoft 365 Active View
regbypass.com disposable — trouble-free.net Active View
regeneron.com corporate Regeneron Pharmaceuticals Proofpoint Active View
regions.com corporate Regions Financial Corporation Proofpoint Active View
regjeringen.no government Government of Norway None Active View
rei.com corporate REI Co-op Proofpoint Active View
rejectmail.com disposable — None Active View
reliable-mail.com disposable — reliable-mail.com Active View
remax.com corporate RE/MAX Holdings Inc. Mimecast Active View
remgro.com corporate Remgro Limited Mimecast Active View
remote.com corporate Remote Technology Inc. Google Workspace Active View
render.com corporate Render Inc. Google Workspace Active View
renesas.com corporate Renesas Electronics Microsoft 365 Active View
renishaw.com corporate Renishaw plc Microsoft 365 Active View
rentech.com corporate Renaissance Technologies None Active View
repligen.com corporate Repligen Corporation Mimecast Active View
reuters.com corporate Thomson Reuters Proofpoint Active View
revlon.com corporate Revlon Mimecast Active View
rexel.com corporate Rexel S.A. Microsoft 365 Active View
rfreed.com corporate R+L Carriers rfreed.com Active View
rfriedkin.com corporate Werner Enterprises None Inactive View
rhyta.com disposable — None Inactive View
rice.edu education Rice University rice.edu Active View
richland.edu education Richland Community College Microsoft 365 Active View
ringcentral.com corporate RingCentral Inc. Proofpoint Active View
ringling.edu education Ringling College of Art and Design Microsoft 365 Active View
riotgames.com corporate Riot Games Inc. Google Workspace Active View
riotinto.com corporate Rio Tinto Group Microsoft 365 Active View
rippling.com corporate Rippling Inc. Google Workspace Active View
risd.edu education Rhode Island School of Design Google Workspace Active View
rit.edu education Rochester Institute of Technology rit.edu Active View
ritzcarlton.com corporate The Ritz-Carlton Hotel Company Microsoft 365 Active View
rklips.com disposable — None Active View

Can't Find a Domain? Verify Any Email Instantly

Check any email address for deliverability, catch-all detection, and inbox verification.

Free Email Verifier Tool View Bulk Pricing
No Credit Card Required 99.7% Accuracy Real-time API Available
ISO 27001 Security Certified
SOC 2 Type II Auditor Verified
GDPR Fully Compliant
CCPA Privacy Ready
HIPAA Healthcare Ready
AES-256 Encryption