Proton Mail

Email & webmail Switzerlandproton.meRank 439 of the most impersonated
Cert findings · 24 h
1
Cert findings · 7 days
2
2 on phishing hosts
Registered lookalikes
139
16 listed by a source or an address list
Official domains
9
verified from Proton Mail's own sites and records

Certificate findings for Proton Mail

Updated hourly · 2026-11-05 10:53 UTC

DomainSpoof matched these hostnames, from public certificate logs, to Proton Mail's name or to lookalike spellings of its official domains. Each was reported or listed by one of our sources, or resolved to an address on Spamhaus DROP or DomainSpoof's phishing-host list.

Published now · 2 findings, grouped by hostname

  1. protonmail.com.co FR · AS16276 · OVH OVH SAS
    Phishing hostOVHAddress hosted confirmed phishing in the last 48 hMX presentSPF ~allDMARC missing
    DetailsHide
    Hostname
    protonmail.com.co
    First seen
    2026-11-04 11:24 UTC
    First published
    2026-11-04 11:54 UTC
    DNS
    Resolves · checked 2026-11-04 12:10 UTC
    Phishing host
    A brand lookalike resolving to an address that hosted confirmed phishing in the last 48 hours. Address 164.132.235.17.
    1. Certificate logged in CT
    2. Resolved to 164.132.235.17
    3. Phishing-host list fetched with the address
    4. Latest DNS check
    Certificate
    Issued by YE2 · precertificate
    Valid 2026-11-04 10:11 UTC to 2027-02-02 10:11 UTC
    Logged 2026-11-04 11:09 UTC in Geomys Tuscolo2027h1, entry 472,281,870
    SHA-256 44e04b2b3d0ab4073076d4c22980fcf59487ba06a599e461cb47d54a1f43fcc1
    Public key SHA-256 dcd005eb0a353c1c01bf976297178db1441273bd8c8c6b7b112609a3033f22bf
    Brand
    Proton Mail
    Addresses
    164.132.235.17 · France · AS16276 OVH OVH SAS · OVH (cloud provider)
    OVH
    OVH (164.132.235.17): a cloud provider. It rents servers and addresses to its customers.
    Domain
    protonmail.com.co
    MX
    Receives mail at mx4.mail.ovh.net, mx3.mail.ovh.net
    SPF
    SPF record with ~all: other senders soft-fail
    DMARC
    Publishes no DMARC policy
    Checked
    2026-11-05 09:50 UTC

    Suggest a correction

  2. www.protonmail.com.co FR · AS16276 · OVH OVH SAS
    Phishing hostOVHAddress hosted confirmed phishing in the last 48 hMX presentSPF ~allDMARC missing
    DetailsHide
    Hostname
    www.protonmail.com.co
    First seen
    2026-11-04 09:39 UTC
    First published
    2026-11-04 10:38 UTC
    DNS
    Resolves · checked 2026-11-05 10:49 UTC
    Phishing host
    A brand lookalike resolving to an address that hosted confirmed phishing in the last 48 hours. Address 164.132.235.17.
    1. Phishing-host list fetched with the address
    2. Certificate logged in CT
    3. Resolved to 164.132.235.17
    4. Latest DNS check
    Certificate
    Issued by YE2
    Valid 2026-11-04 08:36 UTC to 2027-02-02 08:36 UTC
    Logged 2026-11-04 09:34 UTC in Google ParcelYard2027h1, entry 605,990,978
    SHA-256 0b3cf72b5e00f82060d5c5ceaaf94ea4096d6dc309929ceac80233627700bc36
    Public key SHA-256 7555dd10235296af25124bcfb04ad2942145424e57a8514128ee213731ce0af5
    Brand
    Proton Mail
    Addresses
    164.132.235.17 · France · AS16276 OVH OVH SAS · OVH (cloud provider)
    OVH
    OVH (164.132.235.17): a cloud provider. It rents servers and addresses to its customers.
    Domain
    protonmail.com.co
    MX
    Receives mail at mx4.mail.ovh.net, mx3.mail.ovh.net
    SPF
    SPF record with ~all: other senders soft-fail
    DMARC
    Publishes no DMARC policy
    Checked
    2026-11-05 09:50 UTC

    Suggest a correction

How certificate findings are selected

Reported: PhishTank or PhishDestroy reports the hostname as phishing. Listed: CERT Polska, MetaMask, USOM, MODA, NPA 165, JPCERT/CC, the AMF, the FSMA or BaFin lists it, in the source's own category. Phishing host: the name resolves to an address on DomainSpoof's phishing-host list, the addresses that hosted confirmed phishing in the last 48 hours. Spamhaus DROP: it resolves to an address on the Spamhaus DROP list. Same certificate: it shares a certificate with a finding and has listing evidence of its own, a report or listing by a source or its own Spamhaus DROP address.

DomainSpoof reads public certificate logs and the feeds on Sources every hour. A hostname matches Proton Mail when a label carries the brand's name, by the rules on How it works. A lookalike spelling of an official domain matches too. A hostname with two kinds of finding is one row. Details shows the recorded checks, the source's claim and the check times available. How it works · Sources

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