Limits RegistryPUBLIC RECORDLimits RegistryResearch Console →TCP source-port field width is 16 bits under the RFC 9293 TCP header.
The question, scope, and sources behind this Registry record.
Under the RFC 9293 TCP header, what exact standards-defined value applies to Source Port field width?
Current frontiers derived from accepted Claims.
The accepted equality closes this optimization result.
Assertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.