DNSBLCHECK(1)

📦
version 0.207 · 3 versions
, in fedora 43, fedora 44

💅 dnsblcheck — the manual, bestie edition

okay so real talk: dnsblcheck is a command-line tool for checking IP addresses against DNSBLs. that's it, that's the vibe. she's little, she's focused, she's iconic. ✨

🎀 SYNOPSIS

dnsblcheck ip_address dnsbl1 [dnsbl2...]

🌸 DESCRIPTION

so here's the tea 🫖 — you hand dnsblcheck an IP address plus a whole little roster of DNSBL zones, and she goes and checks each zone for that IP address, then prints out a list of hits. like a vibe check but for IPs, and the vibes are DNS blocklists.

every dnsbl entry you pass her is either:

  • a simple domain name — for example, zen.spamhaus.org 🌈

or

  • a domain:type:data triple — for example, zen.spamhaus.org:match:127.0.0.4 or dnsbl.tld:mask:8 👑
ngl, if you wanna know the details about match zones and mask zones, go read the Net::DNSBL::Client documentation. she's not gonna explain it all here, she's just gonna point you at the source. iykyk 💖

⭐ EXIT VALUE

the program's exit value is the number of DNSBLs that were hit. literally. she's counting her little wins and reporting them back to you. no cap. 🔥

🦋 AUTHOR

Dianne Skoll <dianne@skoll.ca> — mother, icon, legend. 💜

Copyright (c) 2010 Roaring Penguin Software Copyright (c) 2022 Dianne Skoll

This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

like... free software AND permissive licensing? she ate and left no crumbs. periodt. 💅

and that's the whole page bestie 💖 this gorgeous little doc came to you courtesy of perl v5.42.2, dated 2025-12-14, filed under DNSBLCHECK(1). mwah, go check some IPs 🌈✨

📦 where this page comes from