Protocol scope and method
IPv4 uses four bytes and the port uses an unsigned two-byte big-endian value.
hex = IPv4 octets + uint16BE(port).
Common questions
Does the IPv4 & Port Binary Converter leave my browser?
No application upload is used. Avoid putting sensitive production data in shareable URLs.
Is this a standards compliance test?
No. Confirm the edition and vendor profile with licensed documents and your target platform.
Offline diagnostic aid. Verify fields, version and vendor extensions before production use.