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Check

Check IP address

OK 52.57.14.250 is not listed in HRBL.

Check another IP address or hostname.

Check host or domain name

To check if a host or domain name is listed in HRBL, use the following form:

1. Host or domain name:
2. Proceed:

Notes

  1. You can use DNS queries on your mail server to check if a remote SMTP client is listed in HRBL or not. See the usage page.
  2. Since DNS queries are cached it is possible for a few minutes that DNS tells an IP address listed even if it is actually not listed already.

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