Fix Xfinity / Comcast Blocking Our Website (ISP-Level False Positive)

We’re dealing with a false-positive security block by Xfinity / Comcast Advanced Security on our website (renlar.com).

Xfinity has confirmed there is no global blacklist, but some users still see the site blocked at the router / ISP security layer. We need this permanently resolved, not manually whitelisted per user.

What we need

We’re looking for someone who has direct experience fixing ISP-level security false positives, specifically:

Xfinity / Comcast Advanced Security

ISP DNS / gateway-level blocking

Domain & IP reputation cleanup

Cloudflare configuration for ISP trust

Security headers, HTTPS, and JS audit

This is not a malware issue and not an SEO task.

Scope of Work

You will be responsible for:

Diagnosing why Xfinity is flagging the domain

Implementing a permanent fix so Xfinity users can access the site without manual allow-listing

Cloudflare setup or optimization (if needed)

IP reputation / hosting audit

Security headers & HTTPS validation

JS / tracking / form behavior review

Verifying resolution from an Xfinity network

Success Criteria

renlar.com loads normally on Xfinity connections

No Advanced Security blocks for end users

No manual router exceptions required

Requirements (Read Carefully)

Please apply only if you have:

Resolved Xfinity / Comcast Advanced Security false positives before

Strong understanding of ISP-level filtering (not just Google Safe Browsing)

Experience with Cloudflare, WAFs, and domain reputation issues

Ability to explain why the issue occurred and how it was fixed

If you’ve never dealt with Xfinity specifically, this is probably not a fit.

Apply Now

Apply Now