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protonmail.ch

DNS Records

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Hosting & Network

protonmail.ch runs on AS62371, with email via Proton.

Hosting network
AS62371AS62371
Managed DNS
Self-hosted / other
Email
Proton
IPv6 (AAAA)
Not enabled
CAA pinning
Set

Sits alongside 30 other sites on AS62371. Stable here since we started watching (Jul 23, 2026).

DNS Records for protonmail.ch

HostnameTypeTTLPriorityContent
protonmail.chMX010mailsec.protonmail.ch
protonmail.chMX05mail.protonmail.ch
protonmail.chA0185.70.42.21
protonmail.chTXT0v=spf1 include:_spf.protonmail.ch ~all
protonmail.chTXT0google-site-verification=XFWl0NLw1rOXu2_PafVbnwk1cCd2Oz-cpfwM2crfrYM
protonmail.chTXT0abuseipdb-verification=SLIfh7Wm
protonmail.chTXT0mailru-verification: f224f0d86fde9b63
protonmail.chTXT0google-site-verification=-5wo7THYiFWoq_XABAwEtMrcTdjtiNBHrmBlIWtocqM
protonmail.chCAA00 iodef mailto:security@proton.me
protonmail.chCAA00 issue sectigo.com
protonmail.chCAA00 issue letsencrypt.org
protonmail.chSOA7200ns1.protonmail.ch support.protonmail.ch 2608171567 1200 144 1814400 7200
protonmail.chNS0ns2.protonmail.ch
protonmail.chNS0ns1.protonmail.ch
protonmail.chNS0ns3.protonmail.ch
www.protonmail.chA0185.70.42.31

Get alerted the moment protonmail.ch's DNS changes

This page is today's snapshot. Turn on monitoring and we'll watch protonmail.ch continuously, notifying you the moment anything moves across all three signals:

DNS monitor showing the hosting provider, current A, MX, NS, and TXT records, and a history of MX and TXT changes

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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Answers use the live DNS records shown on this page. AI-generated — double-check anything important.

About DNS Records

DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:

  • SOA (Start of Authority) - Contains administrative information about the zone
  • NS (Nameserver) - Specifies authoritative nameservers for the domain
  • A (Address) - Maps a domain to an IPv4 address
  • AAAA - Maps a domain to an IPv6 address
  • CNAME (Canonical Name) - Creates an alias pointing to another domain
  • MX (Mail Exchange) - Specifies mail servers for the domain