Domain · Tranco #7,178

protonmail.ch

protonmail.ch is ranked #7,178 among the world's most-visited sites (Tranco). It resolves to 185.70.42.21, hosted on 185-70-42-21.protonmail.ch, and presents a TLS certificate issued by Let's Encrypt.

HTTP 301

Tranco rank	#7,178
IPv4	185.70.42.21
Hosting / reverse DNS	185-70-42-21.protonmail.ch
Nameservers	ns1.protonmail.ch, ns2.protonmail.ch, ns3.protonmail.ch
Mail servers (MX)	mail.protonmail.ch (5), mailsec.protonmail.ch (10)
HTTP status	301 → https://proton.me/mail
TLS certificate	Let's Encrypt · expires 2026-09-29

Notable DNS TXT records

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

FAQ

What is the IP address of protonmail.ch?

protonmail.ch resolves to 185.70.42.21 (185-70-42-21.protonmail.ch).

Who issued the SSL certificate for protonmail.ch?

The TLS/SSL certificate for protonmail.ch was issued by Let's Encrypt, valid until 2026-09-29.

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DNS/HTTP/TLS observed 2026-08-06; registration data via RDAP. Informational only. Browse domains