# cURL error 35. Are our IPs blocked?

**URL:** <https://community.letsencrypt.org/t/curl-error-35-are-our-ips-blocked/207659>\
**Category:** Help\
**Created:** [November 2, 2023, 8:41am UTC](https://community.letsencrypt.org/t/curl-error-35-are-our-ips-blocked/207659 "2023-11-02T08:41:41Z")\
**Posts on this page:** 1\
**Showing post:** 20

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**Author:** ![erfe](https://avatars.discourse-cdn.com/v4/letter/e/e5b9ba/32.png) [@erfe](https://community.letsencrypt.org/u/erfe)\
**Post date:** [November 3, 2023, 10:14am UTC](https://community.letsencrypt.org/t/curl-error-35-are-our-ips-blocked/207659/20 "2023-11-03T10:14:35Z")

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It looks like a conclusion. I don't think there was a check.  
Here is the same case - [Plesk and could not issue a Let's Encrypt SSL/TLS due cURL error 35](https://community.letsencrypt.org/t/plesk-and-could-not-issue-a-lets-encrypt-ssl-tls-due-curl-error-35/159441)  
Checked - unblocked - resolved.

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_[View the full topic](https://community.letsencrypt.org/t/curl-error-35-are-our-ips-blocked/207659)._