Here list of Uninor's all 22 circle network codes. These codes given to every mobile provider, you see these codes when you search for available service providers in your area. If you see any of the code available in your Network provider Search list then you know it is Uninor in your Area.

Delhi 405 844
Andhra Pradesh 405 819
Assam Uninor 405 875
Bihar/Jharkhand 405 876
Gujarat 405 927
Haryana 405 813
Himachal Pradesh 405 814
Jammu & Kashmir 405 815
Karnataka 405 820
Kerala 405 821
Madhya Pradesh 405 928
Maharashtra & Goa 405 929
Mumbai 405 926
North East 405 877
Orissa 405 878
Punjab 405 816
Rajasthan 405 817
Tamil Nadu incl chennai 405 925
Uttar Pradesh (E) 405 879
Uttar Pradesh (W) 405 818
Kolkata 405 822
West Bengal 405 880