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This expression more loosely matches three different formats of postal codes: 5 digit US ZIP code, 5 digit US ZIP code + 4, and 6 digit alphanumeric Canadian Postal Code. The first one must be 5 numeric digits. The ZIP+4 must be 5 numeric digits, a hyphen (optional), and then 4 numeric digits. The Canadian postal code must be of the form ANANAN where A is any alphabetic character (case insensitive) and N is a numeric digit from 0 to 9. A space between the 2nd "A" and 2nd "N" is optional but not required, so the form could also be interpreted as "ANA NAN"

Saudi mobile numbers must start with 05 and just accepts 10 digits

Numeric with decimal values. Accepts negative and zeros. Upto 9 digits and upto 4 decimals allowed

Mobile Number starts with 7,8,9 and total 10 digits

Datas com os anos bissextos. Anos de 2 ou 4 digitos Dates with leap years. Years 2 or 4 digits

Simple Pac code regex, first 3 should be letters and last 6 should be digits.

Matches a UK company number. According to HMRC these must have 8 digits, of which up to the first two may be an alpha prefix. This doesn't test for validity of the prefix.

here n=11; matches: 012 34 123456 ; 012 34 123 456 ; 01234 123456

Catch text containing "to " followed by 4 digit number. Not more than 4 digits, ie 5 or 8 digits.

matches a number with maximum 2 digits after seperator. also american sepratar "." as german/european seperator "," is accepted

Matching 3 Digits Number :0..999: ^([0-9]|[1-9][0-9]|[1-9][0-9][0-9])$ 0 to 999

A Danish phone number can be written in three ways (if you don't include the country code +45). Either one block of 8 digits or two blocks of four digits or four blocks of two digits.

No leading zeroes. Must have 2 digits after the decimal comma ','

Focused on the Russian mobile + city code of 3 digits (eg, Russia). +79261234567 89261234567 79261234567 +7 926 123 45 67 8(926)123-45-67 123-45-67 9261234567 79261234567 (495)1234567 (495) 123 45 67 89261234567 8-926-123-45-67 8 927 1234 234 8 927 12 12 888 8 927 12 555 12 8 927 123 8 123

This expression allows Brazilian phone numbers as they have 4 or 5 prefix digits and with/without regional code. Not perfect but simplifies. Also allows space or dot or hyphen as optional separator in the number as parenthesis in regional code.

Year, month and day with dashes.Year starts from 1900 to 2015 and must be 4 digits.

This regular expressions matches jalali dates of the form YYYY/XX/XX where XX can be 1 or 2 digits long and YYYY is always 4 digits long.

Basic UTR and CRT formats, 10 digits however are often written with an optional space after 1st 5

HMRC Accounts Office Reference (AORef) in format 3digits, the letter P and another letter followed by 7 digits and either an 8th digit or letter X

Maritime vessels are required to be registered in the port nearest to them. Each boat is registered with a 2 Alpha and between 1 and 3 digits reference denoting the port and number. Large boats have the alpha first while small vessels start with the digits