Port 261 — nsiiops

Well-known port 261 (tcp/udp): IIOP Name Service over TLS/SSL. Service name: nsiiops.

port kind port status standard verification verified tier A iana-registry-row@1

registry record

value: 261

Service Name	nsiiops
Port Number	261
Transport Protocol	tcp
Description	IIOP Name Service over TLS/SSL
Assignee	[Jeff_Stewart]
Contact	[Jeff_Stewart]
Registration Date
Modification Date
Reference
Service Code
Unauthorized Use Reported
Assignment Notes

source: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.csv
version: IANA registry, Last-Modified: Fri, 29 May 2026 01:11:28 GMT
retrieved: 2026-05-29 · updated: 2026-05-29

agent: curl -H 'accept: application/json' wire.phall.io/port/261 or /port/261.json