What's Here

Source Code

DNS Services

I operate an RBL/ORDB-style DNS lookup service for blocking people who have sent me spam. Access is in the normal fashion; to look up A.B.C.D send a DNS "A" request for D.C.B.A.spam.pedantic.org. and you will get a result of if and only if that address is in the listing.

To request removal from the spam list, email webmaster@pedantic.org with a description of what was done to solve the problem that allowed that address to send spam. Please note that if you are using a shared email server from an email service provider like Google, you'll need to have them deal with the issue and contact us.

To look up spam from a given IP address that shows up on the spam.pedantic.org list, enter the IP address here:

Important: As of 2015-01-02, the netblock.pedantic.org no longer exists. If you find yourself getting ICMP rejections in response to queries, it is because you are still using this list. Contact the address above after fixing the problem to have the ICMP restriction lifted.

Yellow Dots from Color Printers

I have information about the yellow dots placed on pages by some models of color printers. This is part of the EFF effort to track down and decipher such dots.