Managing Port Numbers

Browsers strip default ports and treat URLs with these ports the same as URLs without them. For example, browsers consider these URLs the same:

• http://someurl

• http://someurl:80

• https://someurl

For non-primary or secondary domains, the port becomes part of the unique identifier. The browser records these independently. For example:

• 10.0.0.61:55 is different from10.0.0.61:555 or 10.0.0.61
• blue.local.something is different from blue.local.something:8080