117 Microsoft Outlook Personal Address Book This is an outline record only, and requires further details, research or authentication to provide information that will enable users to further understand the format and to assess digital preservation risks associated with it if appropriate. If you are able to help by supplying any additional information concerning this entry, please return to the main PRONOM page and select ‘Add an Entry’. Text 1 Digital Preservation Department / The National Archives 02 Aug 2005 02 Aug 2005 x-fmt/75 PUID pab File extension 472 Microsoft Outlook Personal Address Book 4byte signature (!BDN); 4 byte CRC 32 0f following 471 bytes, zero for 64-bit PAB files; 2 byte content type (AB for PAB files) 1 Absolute from BOF 0 2142444E{4}4142