protonmail.ch

Valid Email Server
Domain Lookup › protonmail.ch

Domain Overview

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

Checked via [email protected] · 2026-03-17 20:04:10 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

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

A / AAAA Records

  • 185.70.42.21 ↩ 185-70-42-21.protonmail.ch

Mail Server IPs

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

SOA Record

Raw SOA ns1.protonmail.ch support.protonmail.ch 2511171779 1200 144 1814400 7200
Primary NS (mname)
ns1.protonmail.ch
Admin Email (rname)
support@protonmail.ch
Serial
2511171779
Refresh
1200s
Retry
144s
Expire
1814400s
Minimum TTL
7200s

Nameservers (NS)

ns3.protonmail.ch
ns1.protonmail.ch
ns2.protonmail.ch

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

5 records
  • google-site-verification=-5wo7THYiFWoq_XABAwEtMrcTdjtiNBHrmBlIWtocqM
  • google-site-verification=XFWl0NLw1rOXu2_PafVbnwk1cCd2Oz-cpfwM2crfrYM
  • SPFv=spf1 include:_spf.protonmail.ch ~all
  • abuseipdb-verification=SLIfh7Wm
  • mailru-verification: f224f0d86fde9b63
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