All ISPs / AT&T Fiber
Does AT&T Fiber use CGNAT?
Short answer: No. AT&T Fiber gives home customers a public IPv4 address, according to customer reports (we found no official AT&T Fiber statement). Static IP: Yes (paid block). IPv6 is available, so devices can still be reachable over IPv6.
Can I self-host on AT&T Fiber?
| CGNAT by default? | No Confidence: Low: customer reports only; no official ISP statement found. The 'no' rests on customer reports. AT&T's ToS only says AT&T may use carrier-grade NAT; it doesn't say whether Fiber does. Community reports: public dynamic IPv4 (IP passthrough). AT&T's ToS reserves the right to use CGN at its discretion.
|
|---|---|
| Free opt-out? | N/A No CGNAT by default per community reports. |
| Static IP | Yes (paid block) Static blocks can be added to residential fiber by calling AT&T; not orderable online (community reports).
|
| Static IP price | ~$30/mo for a /29 (5 usable); ~$40/mo for a /28 (13 usable) Community-reported prices; AT&T doesn't publish them. Users report the /29 went from $15 to $30.
|
| IPv6 | YesUnless otherwise specified, AT&T Internet services will support both IPV6 and IPV4 Internet addresses
|
| Typical upload | Symmetrical: upload matches download on every AT&T Fiber plan.
|
| Terms on running servers | No explicit ban AT&T's AUP bans running a server only on dial-up accounts; the ToS says static IPs are intended for networks that may include servers. a static IP address or multiple static IP address is intended for use with a single computer or a network of devices, computers and/or servers.
|
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