[dns-operations] Passive DNS Services?

Michele Neylon - Blacknight michele at blacknight.com
Mon Mar 25 13:14:26 UTC 2019


We are currently being targeted by some very "charming" phishers who are using a variety of hostnames to attack and dupe us and our clients.
We're currently trying to find any and all hostnames that might have been used by the miscreants so was looking at passive DNS for this.
Passive DNS seems to be the best way to find them all, but I'm not sure which services out there are good / bad / indifferent

Any recommendations would be appreciated

NB: we don't have much budget for this so free / cheap would be preferred (

Thanks and regards


Mr Michele Neylon
Blacknight Solutions
Hosting, Colocation & Domains
Intl. +353 (0) 59  9183072
Direct Dial: +353 (0)59 9183090
Personal blog: https://michele.blog/
Some thoughts: https://ceo.hosting/ 
Blacknight Internet Solutions Ltd, Unit 12A,Barrowside Business Park,Sleaty
Road,Graiguecullen,Carlow,R93 X265,Ireland  Company No.: 370845

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