| | | | | | STD Numbers of Assam | |
| | Assam Areas | STD Codes | Abhayapuri | 03669 | Baithalangshu | 03677 | Barama | 03623 | Barpeta Road | 03666 | Bihupuria | 03759 | Bijni | 03668 | Bilasipara | 03667 | Bokajan | 03675 | Bokakhat | 03776 | Boko | 03621 | Dhakuakhana | 03758 | Dhemaji | 03753 | Dhubri | 03662 | Dibrugarh | 0373 | Digboi | 03751 | Diphu | 03671 | Goalpara | 03663 | Gohpur | 03715 | Golaghat | 03774 | Guwahati | 0361 | Hailakandi | 03844 | Hajo | 03664 |
| |
| | | | |
|