At the moment, we don’t provide a web-based lookup form. So you’ll need to use whatever you normally use to look things up in DNS, such as nslookup or dig. Some of the multi-RBL lookup services include our data, but we’ve found that they’re having a hard time keeping up to date, so it’s hard to recommend any of them. Do your own lookups. Get the data straight from the horse’s mouth, as it were. It’s more reliable.

  • Look up to figure out if the IP address a.b.c.d is listed. It will return if listed, nothing otherwise.
  • Look up (no need to reverse the parts here) to figure out if domain.example is listed. It will return if listed, nothing otherwise.
  • Set the type to TXT instead and rerun the query in order to view the human-readable description of the listing.


Default Server: [YOUR DNS SERVER]

Server:         [YOUR DNS SERVER]
Address:        [ITS IP ADDRESS]#53

Non-authoritative answer:
> set type=txt
Server:         [YOUR DNS SERVER]
Address:        [ITS IP ADDRESS]#53

Non-authoritative answer: text = "Sample entry - this list is active"

7 thoughts on “IS SOMETHING LISTED?

  1. Pingback: Recent flood of delisting requests | Scientific Spam

  2. Dennis German

    When I check my domain by IP address is returned but by domain name nothing is returned

    dig +short
    dig +short
    dig +short -t txt
    “[RESEARCHEURO65] UK2Group /18 escalation for scientific spammers [email protected] 20160920″

    Am I doing something wrong?

    1. RocketScientist Post author

      You have performed twofour queries:

      * a query for an IP address, both A and TXT
      * a query for a domain name, both A and TXT

      The results you included are for the IP address.

      You have omitted showing the query that provided the latter result; that would be “dig +short -t txt”.

      The domain name queries return nothing because we do not list that domain name.

      The IP address queries return something (i.e. something is listed).

      If you want to discuss it further, take it to email.

  3. Matthias

    I am a little confused on how to search for my website. Is this the correct format?

    1. RocketScientist Post author

      As shown above. Correctly formatted names will have A records (resolve to IP addresses) in the 127.x.x.x range if listed; the corresponding TXT records will describe why.

  4. Edward

    You should check out scileads, they scrap and collect millions of email from scientific publications, academic websites, poster and grants and sell them. They are the #1 scientific spam producer in the world based in Belfast Ireland.
    Their compliance is a little known link to remove your (7.9 million scientists emails) from their database. You should post it so scientists can request to remove themselves, I did.


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