Domain Intelligence Report

proton.me

DNS records, WHOIS/RDAP registration, SSL certificate, subdomain enumeration, and email-security posture — aggregated in real time and cached.

6
DNS record types
37d
SSL cert remaining
11
Subdomains found
SPF + DMARC
Email security
DNS

DNS Records

All record types resolved from authoritative DNS for proton.me.

A 1 record
  • 185.70.42.45
MX 2 records
  • 10 mail.protonmail.ch.
  • 20 mailsec.protonmail.ch.
TXT 10 records
  • "yandex-verification: 95a7888a0f987e6a"
  • "google-site-verification=_ayl1WqWIag2WkIbK4sNg_x3NCT5nYOl_DgtFPTYKeg"
  • "google-site-verification=4UIZgETX8lGnv0WwpeJJbszo9daKOdXXYBKCA2XLf94"
  • "google-site-verification=QviHfE1VQ57-tDmDLxM6BQH1mdgvdQ_0QsIvCht2IaU"
  • "zoom-domain-verification=ZOOM_verify_5990c1fbb09d4c6aba062cded6cbdf06"
  • "google-site-verification=MUjtKY-4uQAjE92Z2-s1nm9m4mvdqY2z6HCvi_Bj4so"
  • "google-site-verification=2FGIDo-Gf-lWE6t_gWd9gpPTehHD85hbNiEujPVgysc"
  • "protonmail-verification=5262a92f988e64f1be1362138befdf1e19d6a4c1"
  • "v=spf1 include:_spf.protonmail.ch ~all"
  • "linkedin-site-verification=01e79150-bf68-4e0c-ad04-822dc1015b3b"
NS 3 records
  • ns1.proton.me.
  • ns2.proton.me.
  • ns3.proton.me.
CAA 2 records
  • 0 issue "letsencrypt.org"
  • 0 issue "sectigo.com"
SOA 1 record
  • ns1.proton.me. support.proton.me. 2026042464 1200 144 1814400 7200
Registration

WHOIS / RDAP

Registration data for proton.me via the RDAP protocol, with port-43 WHOIS fallback if RDAP is unavailable.

Failed to fetch WHOIS: all RDAP sources failed
TLS

SSL Certificate

Live TLS handshake against proton.me. No third-party scanner.

ssl 37 days remaining
Issuer
CN=R13,O=Let's Encrypt,C=US
Subject
CN=proton.me
Valid from
2026-03-21T13:13:50+00:00
Valid to
2026-06-19T13:13:49+00:00
Serial
534302051994322924648714432782645622118916
SANs (5)
*.pr.tn*.proton.me*.storage.proton.mepr.tnproton.me
Reconnaissance

Subdomains discovered

Aggregated from Certificate Transparency logs (crt.sh, certspotter, hackertarget) with DNS bruteforce fallback if all CT sources fail.

⚠ Partial results — crt.sh status 429 · certspotter rate-limited · hackertarget limited: API count exceeded - Increase Quota with Membership
subdomains 11 found
crt.sh status 429 certspotter rate-limited hackertarget limited: API count exceeded - Increase Quota with Membership dns-brute ok +11 (wordlist 54)
  • autoconfig.proton.me
  • cdn.proton.me
  • docs.proton.me
  • mail.proton.me
  • ns1.proton.me
  • ns2.proton.me
  • ns3.proton.me
  • shop.proton.me
  • status.proton.me
  • vpn.proton.me
  • www.proton.me
Email

Email Security Posture

SPF and DMARC presence and records for proton.me. DKIM requires a known selector and is not auto-discoverable.

SPF present
  • v=spf1 include:_spf.protonmail.ch ~all
DMARC present
  • v=DMARC1; p=quarantine; fo=1; aspf=s; adkim=s;
DKIM selector required

DKIM requires selector; not auto-discoverable

Run this on any domain.

Same data, JSON response, REST API. Free tier available, no card required.

View API → RapidAPI Listing
Related

More domain reports

Browse intelligence reports for other popular domains.

docker.com kubernetes.io npmjs.com pypi.org rust-lang.org python.org nodejs.org go.dev