# ISP-based anti-spam countermeasures

**URL:** <https://meta.discourse.org/t/isp-based-anti-spam-countermeasures/20082>\
**Category:** Feature\
**Created:** [9월 15, 2014, 5:41오후 UTC](https://meta.discourse.org/t/isp-based-anti-spam-countermeasures/20082 "2014-09-15T17:41:36Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![Mittineague](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/mittineague/32/114259_2.png) [@Mittineague](https://meta.discourse.org/u/Mittineague)\
**Post date:** [9월 23, 2014, 10:08오후 UTC](https://meta.discourse.org/t/isp-based-anti-spam-countermeasures/20082/10 "2014-09-23T22:08:23Z")

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This is very good news. I was under the impression that ranges would need to be in CIDR format eg.  
xx.xx.xx.0/12  
xx.xx.xx.0/16  
xx.xx.xx.0/8

I doubt many even know about it let alone understand how to do this, heck, I still have trouble wrapping my head around it and I understand it.

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