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89
Total
90
DNS
100
Email
84
Security
50
Network
100
Availability
Domainprotonmail.com
IPv41
IPv60
MX records2
StatusActive
Domain technical report

Proton Mail: Get a free email account with privacy and encryption | Proton

protonmail.com

Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

Generated: 2026-08-10T01:03:37-05:00 · Cached result

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IPv41
IPv60
MX2
NS3

DiagnosticsMain findings and recommendations

✓
IPv4 (A)30 / 30 pts · Dns

1 IPv4 address(es) detected.

!
IPv6 (AAAA)0 / 10 pts · Dns

0 IPv6 address(es) detected.

✓
Name server redundancy20 / 20 pts · Dns

3 NS record(s); 2 or more required.

✓
SOA record10 / 10 pts · Dns

Authoritative zone record.

✓
DNSSEC chain15 / 15 pts · Dns

DS and DNSKEY detected.

✓
CAA policy5 / 5 pts · Dns

Certificate authority restriction.

✓
DNS propagation10 / 10 pts · Dns

Agreement between public resolvers.

✓
MX records20 / 20 pts · Mail

2 MX record(s).

✓
SPF25 / 25 pts · Mail

SPF policy published.

✓
DMARC25 / 25 pts · Mail

DMARC policy published.

✓
DKIM20 / 20 pts · Mail

A DKIM selector was verified.

✓
MTA-STS5 / 5 pts · Mail

Mail transport policy.

✓
TLS-RPT5 / 5 pts · Mail

TLS reporting policy.

✓
Valid TLS certificate55 / 55 pts · Security

50 day(s) remaining.

✓
Certificate lifetime10 / 10 pts · Security

Full points require at least 30 days remaining.

i
HTTP security headers19 / 35 pts · Security

5 of 9 evaluated headers detected.

✓
PTR reverse DNS30 / 30 pts · Network

PTR: 185-70-42-12.protonmail.ch

i
IPv4 diversity20 / 35 pts · Network

Two or more IPv4 addresses receive full points.

!
IPv6 connectivity0 / 35 pts · Network

AAAA availability.

✓
DNS resolution40 / 40 pts · Availability

At least one address family must resolve.

✓
HTTP response40 / 40 pts · Availability

HTTP/2 200

✓
HTTPS final URL20 / 20 pts · Availability

Final URL uses HTTPS.

DNS and emailPublished records and email configuration

A

1 record(s)
185.70.42.12

AAAA

0 record(s)
—

Not configured

CNAME

0 record(s)
—

Not configured

MX

2 record(s)
5 mail.protonmail.ch.
10 mailsec.protonmail.ch.

TXT

8 record(s)
"yandex-verification: 6059b187e78de544"
"mailru-verification: 14505c6eb222c847"
"google-site-verification=RVUCKIFDkg-Spau8kEohQRsgyHEBUQcVehZqF6PAQcQ"
"brave-ledger-verification=66a7f27fb99949cc0c564ab98efcc58ea1bac3e97eb557c782ab2d44b49aefd7"
"google-site-verification=uXVNQLivTppnZssXHtMY7QVn70Mpd0x2U8pKj324Krk"
"v=spf1 include:_spf.protonmail.ch ~all"
"ahrefs-site-verification_4bdac6bbaa81e0d591d7c0f3ef238905c0521b69bf3d74e64d3775bcb2743afd"
"google-site-verification=aq9zJnp3H3bNE0Y4D4rH5I5Dhj8VMaLYx0uQ7Rozfgg"

NS

3 record(s)
ns2.protonmail.com.
ns1.protonmail.com.
ns3.protonmail.com.

SOA

1 record(s)
ns1.protonmail.com. support.protonmail.ch. 2502172514 1200 144 1814400 7200

CAA

4 record(s)
0 issue "sectigo.com"
0 issue "digicert.com"
0 iodef "mailto:security@proton.me"
0 issue "letsencrypt.org"

DS

1 record(s)
44693 13 2 9F8A2A3CEEE67B747C4CF7D52E6EB0DFD309FD363FD0D059DE66E966 7D038115

DNSKEY

2 record(s)
257 3 13 VRvrqp0hFPeZdrFLfO9f/rtqZg/mlxCAgqkIeeGkTuAmCRLciJv995/2 aU1cvGDuKEMVuH23v8OdgqkqqtLIYA==
256 3 13 a99hiIsSCxd/tXoMy1N5A0bqStx2ULvlBQ8KNOiBITu7cMsjjaMOKz7+ Ww3dKvc7U/HepwLRAml9AOTueCa1mA==

RRSIG

10 record(s)
TXT 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. +5DJ6nBL17GwDWdaVHzYx0yB7ldydL7eaMib6Tf9894/P2Q467cSMvap IAkap724kgk11KnL6sqIxj8TajU4eg==
SOA 13 2 1200 20260908232049 20260809222049 56075 protonmail.com. grIJ0s/k5tl1c4ezogAPr/TNuP6CMWjtgBU3VHLwVcwl/b5VLDpbfLo8 XHavyljFPVd46J2sO+8lGV7+omURgw==
DNSKEY 13 2 1200 20260829235450 20260730234516 56075 protonmail.com. S/tk6zpEXrDGPjizGtYKS8FfC5sAeTu/4cWJb2dhsUM8asYn3RXVA5rp 1NJ3plChVjoOT43HvLXCA/tumvpRVg==
DNSKEY 13 2 1200 20260829235450 20260730234516 44693 protonmail.com. q4K8zXOv4fn74C1SWJgVrS76c2L6uFlmmkRcZU3e/GSq6d0GWRvwS/Lb YKnahPB4rh2OBMS//P4cDaHEtR8rfg==
NS 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. x2R+ocxk14GLZ8TdY/O7lIiCofWtO54QAGv8ETjkWb8a+NnULPpiEFmf eg3dvhazTebC6sCT7ysxH6Ht/q4nWA==
A 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. sNslRnpOS44+07tsuvN3bo5CJ2CO+HUAClcvIsdPK4DFUSL89BHR3xPv xS/O4oyOPzZH/FFyI78GpeCirH/obA==
MX 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. gWErz8h9pOOfsd2jFLZ6Hbt459PpCi89L25GKXHqUQ504pPx2WH9pClB 6BnsGXSZa/w+xVWgpg40FK4YEAsV9w==
DS 13 2 86400 20260815025152 20260808014152 41446 com. /pmmzRTXo6djuvkzDBRX1wnOgg57HTdHwE2K710KlCAxmzJg7UF6EPyu mYef1HaW/cHtmzhGPrWl0h9unuKU0A==
CAA 13 2 1200 20260818192703 20260719191234 56075 protonmail.com. OwGekU7TTxuEbeucJW9aHnvKjiDJNfvy1vnUyCz0O19jCzf8qMuzSKFo wz7daH/nDlHinzxFr8Npv5bUNkwtlw==
NSEC3PARAM 13 2 0 20260822015550 20260723010917 56075 protonmail.com. geL2roMUoA35o/7NKH2USmP1XLKvnPP2SQfuJtzfo8/yC8Nbw1GKwkOo hCR5dFF3AWR2jx2yK9fl90wuw3DICQ==

NSEC

0 record(s)
—

Not configured

NSEC3

0 record(s)
—

Not configured

SRV

0 record(s)
—

Not configured

NAPTR

0 record(s)
—

Not configured

TLSA

0 record(s)
—

Not configured

SSHFP

0 record(s)
—

Not configured

SPF

Configured
v=spf1 include:_spf.protonmail.ch ~all

DMARC

Configured
v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;

DKIM

Selector m1
k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDNst6onPpOhFfnDwF9Rb9HZcpSPJSEQBF3aZndH9SnnAiSbQ0q4s1zjIF0n4UTxBWTXYbFFTAScWW3kPFSCBIvGwQz/E3snhxDf6d3uvhm4dwTCMvGQzD/NODP9LknZwNjYQeyILdRqX4dRNlgHfi4qqDGIXB02rUPqefc6dvAIQIDAQAB

Analyzed webpageMetadata and HTTP response

Title and description

Extracted
Title
Proton Mail: Get a free email account with privacy and encryption | Proton
Description
Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.
Final URL
https://proton.me/mail
HTTP status
206

HTTP

Status
HTTP/2 200
Final URL
https://proton.me/mail
Version
3
Server
X-Powered-By

SSL and HTTP securityCertificate, protocol and security headers

SSL certificate

Available
Available
Yes
Issuer
Let's Encrypt
CN
protonmail.com
Valid from
2026-07-01T08:13:17-05:00
Valid until
2026-09-29T08:13:16-05:00
Days remaining
50
Protocol
TLSv1.3
Cipher
TLS_AES_256_GCM_SHA384

Security headers

5 active
✓
HSTSImplemented
✓
Content Security PolicyImplemented
✓
X-Content-Type-OptionsImplemented
✓
X-Frame-OptionsImplemented
✓
Referrer PolicyImplemented
—
Permissions PolicyNot detected
—
Cross-Origin-Opener-PolicyNot detected
—
Cross-Origin-Embedder-PolicyNot detected
—
Cross-Origin-Resource-PolicyNot detected

DNS propagationComparison across public resolvers

Public resolver comparison

Consistent
✓
Consistent propagation

5 public resolvers queried.

ResolverServerResultLatency
Google
8.8.8.8
185.70.42.12
25,07 ms
Cloudflare
1.1.1.1
185.70.42.12
19,28 ms
Quad9
9.9.9.9
185.70.42.12
23,44 ms
OpenDNS
208.67.222.222
185.70.42.12
25,02 ms
AdGuard
94.140.14.14
185.70.42.12
40,71 ms

IP, geolocation and ASNAssociated network information

185.70.42.12

No data
success
No
country
region
city
asn
organization
isp

Visitor information

Visitor
ip
216.73.217.62
reverse
country
country_code
region
city
latitude
longitude
isp
organization
asn
timezone
browser
Other
os
Other
language
user_agent
Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
is_bot
Yes
cloudflare
No

SMTPEmail port connectivity

mail.protonmail.ch

Port 25: Closed/unreachable - 37.7 ms - 
Port 465: Closed/unreachable - 4057.8 ms - 
Port 587: Closed/unreachable - 4021.1 ms -

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