It's HTML character references for encoding a character by its decimal code point. Look at the ASCII table here and you'll see that 39 is the code for apostrophe.

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28, 1C, 34, FS, File Separator. 29, 1D, 35, GS, Group Separator. 30, 1E, 36, RS, Record Separator. 31, 1F, 37, US, Unit Separator. 32, 20, 40, Space. 33, 21, 41 ! Telephone numbers in Spain - Wikipedia Country calling code, +34. International call prefix, 00. Trunk prefix, none. The Spanish telephone numbering plan is the allocation of telephone numbers in Spain. Changes to document codes in appendix C11 (Tariff stop ... 3 days ago Changes to document codes in appendix C11 (Tariff stop press notice 34). Find out about changes to appendix C11 of the Customs Handling  34 | East Yorkshire - East Yorkshire Motor Services 1 day ago Timetable for 34 - Hull to Willerby Square, via Wymersley Road.

 Unused Space ! Exclamation mark " Quotation mark # Number sign $ Dollar sign % Percent sign & Ampersand '  34 - Code Table .NET

Country calling code, +34. International call prefix, 00. Trunk prefix, none. The Spanish telephone numbering plan is the allocation of telephone numbers in Spain.

HTML Entities - W3Schools Reserved characters in HTML must be replaced with character entities. Characters that are not present on your keyboard can also be replaced by entities. HTML 4.0 Special Entities - Web Design Group A table of the HTML 4 entities for markup-significant and internationalization characters. Ascii Table - ASCII character codes and html, octal, hex and ... 28, 1C, 34, FS, File Separator. 29, 1D, 35, GS, Group Separator. 30, 1E, 36, RS, Record Separator. 31, 1F, 37, US, Unit Separator. 32, 20, 40, Space. 33, 21, 41 ! Telephone numbers in Spain - Wikipedia

34 | East Yorkshire - East Yorkshire Motor Services 1 day ago Timetable for 34 - Hull to Willerby Square, via Wymersley Road.

HTML Entities - W3Schools