proton.me

Valid Email Server
Domain Lookup › proton.me

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
proton.me
Yes
✓ Yes
Unknown
No
Yes
⚠ Yes
No
No

Checked via [email protected] · 2026-03-17 19:31:51 UTC · ↺ Refresh

MX Hostnames

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

MX Priorities

  • mail.protonmail.ch: 10
  • mailsec.protonmail.ch: 20

A / AAAA Records

  • 185.70.42.45 ↩ 185-70-42-45.protonmail.ch

Mail Server IPs

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

SOA Record

Raw SOA ns1.proton.me support.proton.me 2026031703 1200 144 1814400 7200
Primary NS (mname)
ns1.proton.me
Admin Email (rname)
support@proton.me
Serial
2026031703
Refresh
1200s
Retry
144s
Expire
1814400s
Minimum TTL
7200s

Nameservers (NS)

ns1.proton.me
ns3.proton.me
ns2.proton.me

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

10 records
  • google-site-verification=2FGIDo-Gf-lWE6t_gWd9gpPTehHD85hbNiEujPVgysc
  • google-site-verification=4UIZgETX8lGnv0WwpeJJbszo9daKOdXXYBKCA2XLf94
  • yandex-verification: 95a7888a0f987e6a
  • protonmail-verification=5262a92f988e64f1be1362138befdf1e19d6a4c1
  • google-site-verification=MUjtKY-4uQAjE92Z2-s1nm9m4mvdqY2z6HCvi_Bj4so
  • linkedin-site-verification=01e79150-bf68-4e0c-ad04-822dc1015b3b
  • zoom-domain-verification=ZOOM_verify_5990c1fbb09d4c6aba062cded6cbdf06
  • google-site-verification=QviHfE1VQ57-tDmDLxM6BQH1mdgvdQ_0QsIvCht2IaU
  • google-site-verification=_ayl1WqWIag2WkIbK4sNg_x3NCT5nYOl_DgtFPTYKeg
  • SPFv=spf1 include:_spf.protonmail.ch ~all
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 proton.me

SMTP handshake, catch-all detection, custom validation rules, actual deliverability tests, and more.

No credit card required
Get 1,000 Free Credits