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References
- ↑ "Karachi and Lahore now have eight digit phone numbers. In the near future this will be extended to other metros". Daily Times (Pakistan). 2009-07-08. Retrieved 2009-10-01.
- ↑ "Phone numbers in Karachi, Lahore changed to eight digits". DAWN.COM. 2009-07-07. Retrieved 2022-05-18.
- ↑ "National Dialing Codes". ptcl.com.pk. Retrieved 2022-05-18.
- ↑ "List of PTCL Prefix". Ufone 4G. Retrieved 2022-05-18.
- ↑ "National Dialing Codes". Archived from the original on 2015-11-09. Retrieved 2015-04-17.
