← Area code 203
203-528 phone numbers
Numbers 203-528-0000 to 203-528-9999 are assigned to Level 3 Communications, LLC in Waterbury, CT. 9 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Reported numbers in 203-528
- 1 (203) 528-0632 3complaints
- 2 (203) 528-2429 2complaints
- 3 (203) 528-0860 1complaints
- 4 (203) 528-0878 1complaints
- 5 (203) 528-2261 1complaints
- 6 (203) 528-2400 1complaints
- 7 (203) 528-2567 1complaints
- 8 (203) 528-3165 1complaints
- 9 (203) 528-3280 1complaints
- 10 (203) 528-3349 1complaints
- 11 (203) 528-3584 1complaints
- 12 (203) 528-3770 1complaints
- 13 (203) 528-3809 1complaints
- 14 (203) 528-3848 1complaints
- 15 (203) 528-3928 1complaints
- 16 (203) 528-3985 1complaints
- 17 (203) 528-4106 1complaints
- 18 (203) 528-4291 1complaints
- 19 (203) 528-4769 1complaints
- 20 (203) 528-4896 1complaints
- 21 (203) 528-7689 1complaints
- 22 (203) 528-9796 1complaints