Sonic Proxies are the best dedicated DC proxies for all copping needs. There is no website so keep an eye on the twitter page.
Sonic Proxies offers IPs for releases. The last restock was one month ago. At that time each proxy was quite cheap - $0.60. There were two locations available - Chicago or Virginia.
Also the team organized giveaways quite often, but currently twitter page has no relevant information.
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