So I didn't know much about UCEPROTECT until now, since they just listed the entire Core-Backbone AS in their level 3 RBL.
Only way to for an ISP to request a delist is to pay them 586 USD. If you don't want to pay, you need to wait at least one week for the BL to be removed.
The blacklist covers 48128 individual IP's but only 256 were used for spam. It was a single /24, not even owned by Core, but they had listed the whole ASN as spammy. Not only Core owned addresses, IP's from other companies announced on the same ASN too.
From their FAQ:
As you should know now: It is not you, it is your complete provider which got UCEPROTECT-Level 3 listed. Your IP xxx.xxx.xxx.xxx was NOT part of a spamrun, but you are the one that has freely chosen your provider. By tolerating or ignoring that your provider doesn't care about spammers you are indirectly also supporting the global spam with your money. Seen from this point of view, you really shouldn't wonder about the consequences.
When you try to whitelist a single address:
Since your IP wasn't directly involved in abuse, you can exclude your IP from neigborhood blocklists as UCEPROTECT Levels 2 and 3 and others that are importing our whitelist, by registering your IP with us.
They know nor my IP or subnet was used for abuse, but they want me to pay (23USD/m) for delisting anyway. No way I am paying anything to those scammers.
Those guys don't look like a legit operation at all, but their RBL's are used by some big providers and worst of all, they are actually sponsored by some big guys like WSI, EGI, Singlehop or Cari.net:
http://www.uceprotect.net/en/index.php?m=11&s=0
Has anyone had problems with them in the past? Are they known scammers or only undercover ones?