: Node2.mobiflock.com does use dnsmadeeasy.com for DNS, however, knowing how to write code to make this work in Apache, you cannot block access to your site based upon any DNS server work fast

Node2.mobiflock.com does use dnsmadeeasy.com for DNS, however, knowing how to write code to make this work in Apache, you cannot block access to your site based upon any DNS server work fast enough to satisfy users. In fact, it would be an unreliable way of blocking anyone. You could be blocking valid accesses as well as invalid accesses.

It is unfortunate, but bots are the way of life. Having said that, do not waste time if you see a bad bot again and come here. Post a question and I will give you the code.

I have node2.mobiflock.com in my database and how to block code exists on my site. ;-) However, I will give that to you now. I have two IP addresses for this site.

I am assuming Apache for this.

Resolves to now: 144.76.194.118

RewriteCond %{REMOTE_ADDR} ^144.76.194.118$ [NC]
RewriteRule .* - [F,L]

Previous: 144.76.137.226

RewriteCond %{REMOTE_ADDR} ^144.76.137.226$ [NC]
RewriteRule .* - [F,L]

IP address block info:

AS24940 - Hetzner Online AG
144.76.0.0 - 144.76.255.255

Block: 144.76.0.0/16
Base Address: 144.76.0.0
Broadcast Address: 144.76.255.255
Net Mask: 255.255.0.0
Host Mask: 0.0.255.255
Bits: 16
Size: 65536
2nd Element: 144.76.0.2

This is not a subscriber block so you will not be blocking users.

You can block the entire IP address block using:

RewriteCond %{REMOTE_ADDR} ^144.76.([0-2]*[0-5]*[0-5]*).([0-2]*[0-5]*[0-5]*)$ [NC]
RewriteRule .* - [F,L]

This are valid IP address blocks for majestic12.co.uk though I have seen two other IP address blocks from two years ago. I have not included them here, but can add them if you see accesses from other IP address blocks.

You can block this bot using your robots.txt file. Majestic is a well behaved bot.

User-agent: MJ12bot
Disallow: /

These are the most recent user agents:

Mozilla/5.0 (compatible; MJ12bot/v1.4.4; www.majestic12.co.uk/bot.php?+) Mozilla/5.0 (compatible; MJ12bot/v1.4.5; www.majestic12.co.uk/bot.php?+)

There was one point where Majestic's user agent was used by rogue bots, but that was a long time ago. I have not researched this in my database, but could if necessary.

Let me know how it goes.