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Does C Spire Fiber use CGNAT?

Fiber · Mississippi / Alabama · last verified 2026-10-16

Short answer: Not verified yet. We haven't found a reliable source on whether C Spire Fiber uses CGNAT. If you know, please submit a report.

Can I self-host on C Spire Fiber?

CGNAT not yet verified. Customer threads suggest some lines are on CGNAT and support can switch them to a public IP, but we couldn't read them to confirm.

CGNAT by default?Unknown

Not yet verified. Know the answer? Submit a report.

Free opt-out?Unknown

Not yet verified. Know the answer? Submit a report.

Static IPUnknown

Not yet verified. Know the answer? Submit a report.

Static IP priceUnknown

Not yet verified. Know the answer? Submit a report.

IPv6Unknown

Not yet verified. Know the answer? Submit a report.

Typical uploadSymmetrical (Fiber 200, 500, 1 Gig and 2 Gig list the same upload and download).
Terms on running serversRestricted

C Spire Home Service Agreement.

In addition, unless otherwise authorized, Customer is prohibited from using the Services to operate fixed servers, for commercial purposes, or for any uses that result in excessive usage inconsistent with normal usage patterns.

Source types: official the ISP's own page · official-forum ISP staff on the ISP's forum · community customer reports · secondary a third party quoting the ISP. "Unknown" means we haven't verified it, not that the answer is no.

Is something wrong or missing? Submit a report Check whether you're behind CGNAT