https://www.experatoo.com/travail/full-list-of-expedi_445532_1.htm

https://volkkaripalsta.com/keskustelu/topic/43540-list-of-expedia-%E2%84%A2%EF%B8%8F-contact%C2%AE%EF%B8%8F-numbers-in-the-usa%C2%AE%EF%B8%8...

https://about.me/numbersstepbystepguide

https://about.me/numbersintheusa247

https://about.me/guidelinefulllistoffinnair

https://officialhekpdeck.zohodesk.com/portal/en/kb/articles/full-list-of-official-expedi

https://pclapcounter.forumotion.com/t1930-lot-polish-airline-receives-warning-from-expert#7195

https://forum.xwiki.org/t/complete-list-of-delta-airlines-contact-numbers-in-the-usa-full-detailed-guide/17344

https://squirebot.org/forums/topic/full-list-of-flair-airlines%ef%b8%8f-customersupport%ef%b8%8fusa-contact-numbers/

https://www.tapatalk.com/groups/tyrannywatchus/viewtopic.php?f=2&t=190&from_new_topic=1