Blockchain.com

Crypto & web3 United Kingdomblockchain.comRank 160 of the most impersonated
Cert findings · 24 h
0
Cert findings · 7 days
2
2 on phishing hosts
Registered lookalikes
523
30 listed by a source or an address list
Official domains
5
verified from Blockchain.com's own sites and records

Certificate findings for Blockchain.com

Updated hourly · 2026-11-05 10:53 UTC

DomainSpoof matched these hostnames, from public certificate logs, to Blockchain.com'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 · 5 findings, grouped by hostname

  1. www.blockchain-refund.us CY · AS47583 · AS-HOSTINGER Hostinger Inte…
    Phishing hostHostingerAddress hosted confirmed phishing in the last 48 hMX presentSPF ~allDMARC policy noneRegistered 14 mo ago
    DetailsHide
    Hostname
    www.blockchain-refund.us
    First seen
    2026-10-31 08:06 UTC
    First published
    2026-10-31 08:21 UTC
    DNS
    Resolves · checked 2026-11-05 08:32 UTC
    Phishing host
    A brand lookalike resolving to an address that hosted confirmed phishing in the last 48 hours. Address 2.57.91.91.
    1. Phishing-host list fetched with the address
    2. Certificate logged in CT
    3. Resolved to 2.57.91.91
    4. Latest DNS check
    Certificate
    Issued by YE1 · precertificate
    Valid 2026-10-31 07:04 UTC to 2027-01-29 07:04 UTC
    Logged 2026-10-31 08:02 UTC in DigiCert Sphinx2027h1, entry 321,364,199
    SHA-256 3fd3c4dcc687e5f9375a0e74b9ceaab67d4e73999a6e1a49e57af7c0f4e4c15a
    Public key SHA-256 5e922cafa7f98bcc75c54b867b3d03b4ca8f3f321b0b8d377ec48590a95bb5e7
    Brand
    Blockchain.com
    Addresses
    2.57.91.91 · Cyprus · AS47583 AS-HOSTINGER Hostinger International Limited · Hostinger (shared hosting)
    Hostinger
    Hostinger (2.57.91.91): shared web hosting and domain registration. One address typically serves many customer sites.
    Domain
    blockchain-refund.us
    Registered
    2025-09-11 · Hosting Concepts B.V. d/b/a Registrar.eu
    MX
    Receives mail at mx1.hostinger.com, mx2.hostinger.com
    SPF
    SPF record with ~all: other senders soft-fail
    DMARC
    DMARC policy p=none: reports only
    Checked
    2026-11-05 10:04 UTC

    Suggest a correction

  2. blockchain-refund.us CY · AS47583 · AS-HOSTINGER Hostinger Inte…
    Phishing hostHostingerAddress hosted confirmed phishing in the last 48 hMX presentSPF ~allDMARC policy noneRegistered 14 mo ago
    DetailsHide
    Hostname
    blockchain-refund.us
    First seen
    2026-10-31 08:06 UTC
    First published
    2026-10-31 08:21 UTC
    DNS
    Resolves · checked 2026-11-05 08:32 UTC
    Phishing host
    A brand lookalike resolving to an address that hosted confirmed phishing in the last 48 hours. Address 2.57.91.91.
    1. Phishing-host list fetched with the address
    2. Certificate logged in CT
    3. Resolved to 2.57.91.91
    4. Latest DNS check
    Certificate
    Issued by YE1 · precertificate
    Valid 2026-10-31 07:04 UTC to 2027-01-29 07:04 UTC
    Logged 2026-10-31 08:02 UTC in DigiCert Sphinx2027h1, entry 321,364,199
    SHA-256 3fd3c4dcc687e5f9375a0e74b9ceaab67d4e73999a6e1a49e57af7c0f4e4c15a
    Public key SHA-256 5e922cafa7f98bcc75c54b867b3d03b4ca8f3f321b0b8d377ec48590a95bb5e7
    Brand
    Blockchain.com
    Addresses
    2.57.91.91 · Cyprus · AS47583 AS-HOSTINGER Hostinger International Limited · Hostinger (shared hosting)
    Hostinger
    Hostinger (2.57.91.91): shared web hosting and domain registration. One address typically serves many customer sites.
    Domain
    blockchain-refund.us
    Registered
    2025-09-11 · Hosting Concepts B.V. d/b/a Registrar.eu
    MX
    Receives mail at mx1.hostinger.com, mx2.hostinger.com
    SPF
    SPF record with ~all: other senders soft-fail
    DMARC
    DMARC policy p=none: reports only
    Checked
    2026-11-05 10:04 UTC

    Suggest a correction

  3. signin.auth-blockchain.com GB · AS60068 · CDN77 Datacamp Limited2 addresses
    ListedUnder auth-blockchain.com, listed by MetaMaskMX absentSPF missingDMARC missingRegistered 3 mo ago
    DetailsHide
    Hostname
    signin.auth-blockchain.com
    First seen
    2026-10-27 14:51 UTC
    Listing
    MetaMask: first observed in the feed 2026-10-27 · still listed at the last successful feed check 2026-11-05 05:51 UTC
    DNS
    Resolves · checked 2026-11-05 09:04 UTC
    Listed
    MetaMask, listing auth-blockchain.com and the names under it
    1. Observed in the MetaMask feed
    2. We matched its certificate name
    3. Latest DNS check
    Certificate
    Logged in Google PlumbersArms2027h1, entry 473,536,269
    SHA-256 ad28813051e24e7491baafc5beb2d6ad3a5a5b763a2c4dd38a5ed280569a5235
    Brand
    Blockchain.com
    Addresses
    37.19.207.37 · United Kingdom · AS60068 CDN77 Datacamp Limited
    2a02:6ea0:e237::1503:1
    Domain
    auth-blockchain.com
    Registered
    2026-08-15 · Key-Systems GmbH
    MX
    Publishes no mail exchanger
    SPF
    Publishes no SPF record
    DMARC
    Publishes no DMARC policy
    Checked
    2026-11-05 08:31 UTC

    Suggest a correction

  4. wallet.auth-blockchain.com GB · AS60068 · CDN77 Datacamp Limited2 addresses
    ListedUnder auth-blockchain.com, listed by MetaMaskMX absentSPF missingDMARC missingRegistered 3 mo ago
    DetailsHide
    Hostname
    wallet.auth-blockchain.com
    First seen
    2026-10-27 14:51 UTC
    Listing
    MetaMask: first observed in the feed 2026-10-27 · still listed at the last successful feed check 2026-11-05 05:51 UTC
    DNS
    Resolves · checked 2026-11-05 09:02 UTC
    Listed
    MetaMask, listing auth-blockchain.com and the names under it
    1. Observed in the MetaMask feed
    2. We matched its certificate name
    3. Latest DNS check
    Certificate
    Logged in Google ParcelYard2027h1, entry 472,841,274
    SHA-256 1b30f8b745aeef99093a14e3e3860acb2367203d6973319c640cee0851af4c73
    Brand
    Blockchain.com
    Addresses
    37.19.207.37 · United Kingdom · AS60068 CDN77 Datacamp Limited
    2a02:6ea0:e237::1503:1
    Domain
    auth-blockchain.com
    Registered
    2026-08-15 · Key-Systems GmbH
    MX
    Publishes no mail exchanger
    SPF
    Publishes no SPF record
    DMARC
    Publishes no DMARC policy
    Checked
    2026-11-05 08:31 UTC

    Suggest a correction

  5. login.auth-blockchain.com GB · AS212238 · CDNEXT Datacamp Limited2 addresses
    ListedUnder auth-blockchain.com, listed by MetaMaskMX absentSPF missingDMARC missingRegistered 3 mo ago
    DetailsHide
    Hostname
    login.auth-blockchain.com
    First seen
    2026-10-27 14:40 UTC
    Listing
    MetaMask: first observed in the feed 2026-10-27 · still listed at the last successful feed check 2026-11-05 05:51 UTC
    DNS
    Resolves · checked 2026-11-05 09:02 UTC
    Listed
    MetaMask, listing auth-blockchain.com and the names under it
    1. Observed in the MetaMask feed
    2. We matched its certificate name
    3. Latest DNS check
    Certificate
    Logged in Let's Encrypt Willow2027h1, entry 798,630,957
    SHA-256 36cd918bf69f779b8774de69d04e7081cea22bbe655f7572772fcc60529c5c06
    Brand
    Blockchain.com
    Addresses
    152.233.50.1 · United Kingdom · AS212238 CDNEXT Datacamp Limited
    2400:52e0:1a04::1310:1
    Domain
    auth-blockchain.com
    Registered
    2026-08-15 · Key-Systems GmbH
    MX
    Publishes no mail exchanger
    SPF
    Publishes no SPF record
    DMARC
    Publishes no DMARC policy
    Checked
    2026-11-05 08:31 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 Blockchain.com 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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