Registered · Cross-platform

5223 XMPP over SSL / APNs

TCP Yes
UDP Unofficial
SCTP —
DCCP —

What it is

Legacy XMPP-over-SSL; also Apple Push Notification Service.

When / why

APNs requires outbound 5223 from networks with Apple devices.

Protocol status detail

TransportStatusMeaning
TCP Yes Assigned by IANA and standardized, specified, or widely used on this port.
UDP Unofficial Not assigned by IANA, but standardized, specified, or widely used on this port.
SCTP — Not applicable for this transport.
DCCP — Not applicable for this transport.
« 5222 XMPP client 5228 Google Play / FCM »

Port range

Registered (1024–49151). Assigned by IANA on request; usable without elevated privileges on most systems.

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