Irish personal public service number: seven digits, one check letter, and for numbers issued from January 2013 an optional second letter in the range A to I or W. Purview documents both the old form, seven digits and one or two letters, and the new one; Cloudflare publishes 1234567FA as its sample. The check letter is not verified, the match is on shape alone. The seven digit head keeps this clear of the nine and ten digit crowd, and no registry label fired on the examples.
Label: IE_PPSN
(?<!\w)\d{7}[A-Z][A-IW]?(?!\w)The PPS number 1234567FA is printed on the payslip. → 1234567FARevenue holds 7654321T for the same person. → 7654321T123456FA12345671234567faTags: ie, government-id, identity, hr