IANA offline port directory
Search the bundled IANA registry by port number or service name, filter TCP/UDP/SCTP/DCCP, and review registered uses and local hardening guidance.
About this iana offline port directory
Search the bundled IANA registry by port number or service name, filter TCP/UDP/SCTP/DCCP, and review registered uses and local hardening guidance Performs protocol inspection, IP calculation, and network analysis client-side without sending probes or exposing network topology.
Protocol mechanics & network logic
The execution engine processes input tokens and applies transformations in the browser sandbox. Specifically, Enter a port from 0–65535 or part of a service name or description. Clear the field to browse every record; select a transport and use Previous/Next for 50 records per page. Searches stay in your browser. The separate numeric calculator below keeps its legacy 24-entry JSON subset.
Worked network diagnostic scenario
Scenario: Classify an unlisted dynamic/private port in the bundled local table.
Sample input:
Processing: Validate the integer, classify 50000 in the dynamic/private range, then miss the 24-entry common-service map. 443 → https records for TCP, UDP and SCTP. Search ssh and choose TCP for the Secure Shell registration. 50000 is dynamic/private with no IANA assignment; the legacy calculator still returns its explicit unknown-subset JSON.
Illustrative output:
Addressing limits & protocol boundaries
Offline IANA snapshot dated 2026-09-30, including every CSV record, reserved/unassigned ranges and names without an assigned port. Registry names, descriptions and notes remain in their original language. No live lookup, port scan, service detection or file export. Registration is not proof of the service running or its safety. Dynamic/private ports 49152–65535 are not assigned by IANA. No separate historical Trojan/backdoor-port database is included.
Addressing calculations and subnet models in IANA offline port directory follow IETF RFC definitions. Ensure subnet masks and CIDR prefixes match your network topology.
Offline network inspection boundary
Address parsing and CIDR calculations in IANA offline port directory run entirely client-side without probing external IP networks or transmitting routing data.
IETF RFC specifications & IANA registries
IETF Request for Comments (RFC) standards and IANA registry references:
- Implementation-specific browser utility or reference guide (no single governing external standard)
IANA offline port directory verification · Audit standards
How to use it
- Enter, paste, or select your input data into the IANA offline port directory workspace controls.
- Review parameter fields, units, or options configured for IANA offline port directory.
- Click the action button or observe immediate live calculations rendered by IANA offline port directory.
Frequently asked questions
IANA offline port directory?+
Enter a port from 0–65535 or part of a service name or description.
What input and result fields does the page provide?+
Boundary constraints concerning "What input and result fields does the page provide?" prevent invalid parameter state mutations client-side.
How are unknown ports and boundaries handled?+
Hardening: confirm the listening process and intended use on systems you administer. Disable unused services, restrict inbound access to required peers, keep software patched, and use strong authentication and encrypted protocols where available. A port number alone cannot identify malware or justify allowing traffic.
What result does the worked example produce?+
Searching for port 443 returns the official IANA registry entry for the HTTPS protocol across TCP, UDP, and SCTP transports, displaying the service name, registration status, description, and assigned RFC specifications.