Here’s the summary for the wikipedia article you mentioned in your comment:
A ZIP Code is a system of postal codes used by the United States Postal Service (USPS). Introduced on July 1, 1963, the basic format consisted of five digits. In 1983, an extended ZIP+4code was introduced; it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location. The term ZIP is an acronym for Zone Improvement Plan; it was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address. ZIP Code is a trademark and ZIP+4 is a registered trademark of the United States Postal Service, which also registered ZIP Code as a service mark until 1997.
It may be possible to convince them to offer that another way, if you care about software freedom and they care about what you value.
If the number in the username is a zip code, they don’t care.
Is there a four digit ZIP code format I’m not aware of
I guess it’s called US defaultism
Here’s the summary for the wikipedia article you mentioned in your comment:
This list shows an overview of postal code notation schemes for all countries that have postal or ZIP Code systems.article | about
ZIP codes are US specific, postal codes are international.
I looked it up before my comment
Here’s the summary for the wikipedia article you mentioned in your comment:
A ZIP Code is a system of postal codes used by the United States Postal Service (USPS). Introduced on July 1, 1963, the basic format consisted of five digits. In 1983, an extended ZIP+4 code was introduced; it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location. The term ZIP is an acronym for Zone Improvement Plan; it was chosen to suggest that the mail travels more efficiently and quickly (zipping along) when senders use the code in the postal address. ZIP Code is a trademark and ZIP+4 is a registered trademark of the United States Postal Service, which also registered ZIP Code as a service mark until 1997.article | about