protonmail.com

Valid Email Server
Domain Lookup › protonmail.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
protonmail.com
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No

Checked via [email protected] · 2026-03-17 19:17:09 UTC · ↺ Refresh

MX Hostnames

  • mailsec.protonmail.ch
  • mail.protonmail.ch

MX Priorities

  • mailsec.protonmail.ch: 10
  • mail.protonmail.ch: 5

A / AAAA Records

  • 185.70.42.12 ↩ 185-70-42-12.protonmail.ch

Mail Server IPs

  • 185.70.42.129 ↩ mailsec.protonmail.ch
  • 185.205.70.129 ↩ mailsec.protonmail.ch
  • 176.119.200.129 ↩ mailsec.protonmail.ch
  • 176.119.200.128 ↩ mail.protonmail.ch
  • 185.70.42.128 ↩ mail.protonmail.ch
  • 185.205.70.128 ↩ mail.protonmail.ch

SOA Record

Raw SOA ns1.protonmail.com support.protonmail.ch 2502172130 1200 144 1814400 7200
Primary NS (mname)
ns1.protonmail.com
Admin Email (rname)
support@protonmail.ch
Serial
2502172130
Refresh
1200s
Retry
144s
Expire
1814400s
Minimum TTL
7200s

Nameservers (NS)

ns1.protonmail.com
ns3.protonmail.com
ns2.protonmail.com

SPF Record

✓ Soft Fail (~all)
v=spf1 include:_spf.protonmail.ch ~all
📊 DNS lookups: 1/10
~ Soft fail (~all) — moderate enforcement

DMARC Record

~ Quarantine
v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;
~ Quarantine — good protection (failing mail goes to spam)
📋 SPF alignment: Strict · DKIM alignment: Strict
⚠ No aggregate reports (rua= not set)

DKIM Selectors

✗ None detected

No 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

8 records
  • google-site-verification=RVUCKIFDkg-Spau8kEohQRsgyHEBUQcVehZqF6PAQcQ
  • brave-ledger-verification=66a7f27fb99949cc0c564ab98efcc58ea1bac3e97eb557c782ab2d44b49aefd7
  • google-site-verification=uXVNQLivTppnZssXHtMY7QVn70Mpd0x2U8pKj324Krk
  • google-site-verification=aq9zJnp3H3bNE0Y4D4rH5I5Dhj8VMaLYx0uQ7Rozfgg
  • ahrefs-site-verification_4bdac6bbaa81e0d591d7c0f3ef238905c0521b69bf3d74e64d3775bcb2743afd
  • mailru-verification: 14505c6eb222c847
  • SPFv=spf1 include:_spf.protonmail.ch ~all
  • yandex-verification: 6059b187e78de544
Full email verification for protonmail.com

Run SMTP check, SPF/DKIM/DMARC and catch-all detection.

SPF / DKIM / DMARC Get 1,000 Free Credits