how to check own grameenphone, banglalink, robi, airtel, teletalk, citycell mobile number?

Here the list How to check GrameenPhone, Banglalink, Robi, Airtel, Teletalk, Citycell own mobile/sim Number

GrameenPhone (017)	dial *2#
Banglalink  (019)	dial *511#
Robi  (018)	dial *140*2*4#
Airtel BD (016)	dial *121*6*3#
Teletalk Bangladesh (015)	dial *551#
Citycell (011)	write MDN and send to 7678

•how to check grameenphone own number ? dial *2#

•how to check banglalink own number ? dial *511#

•how to check robi own number ? dial *140*2*4#

•how to check airtel own number ? dial *121*6*3#

•how to check teletalk own number ? dial *551#

•how to check citycell own number ? write MDN and send to 7678

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