49152–65535 Ephemeral / dynamic rangePrivate/ephemeral ports for outbound source ports and short-lived services; cannot be IANA-registered.
Stateful firewalls auto-permit return traffic here. Also used by Windows RPC dynamic allocation (see 135).
| Transport | Status | Meaning |
|---|---|---|
| TCP | Unofficial | Not assigned by IANA, but standardized, specified, or widely used on this port. |
| UDP | No | Not assigned, standardized, or widely used on this port. |
| SCTP | — | Not applicable for this transport. |
| DCCP | — | Not applicable for this transport. |
Dynamic / private (49152–65535). Cannot be IANA-registered; used for ephemeral allocation and custom services.
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