Local Calling Guide
Area code/prefix search
NPA: 303
[Rate centres in NPA 303]
[Dial plan for NPA 303]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 303-993
| 1 |
Denver |
CO |
DNVRCO37DS0 |
7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC |
656 |
|
2007-06-26 |
|
| 303-993
| 2 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 3 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 4 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 5 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 6 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 7 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 8 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-07-16 |
|
| 303-993
| 9 |
Denver |
CO |
AURRCO20AMD |
6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO |
656 |
|
2007-11-05 |
|
| 303-994
| A |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 0 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 1 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 2 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 3 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 4 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 5 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 6 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 7 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 8 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-994
| 9 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| A |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 0 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 1 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 2 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 3 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 4 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 5 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 6 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 7 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 8 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-995
| 9 |
Denver |
CO |
DNVRCOII3MD |
6529 T-MOBILE USA, INC. |
656 |
|
|
|
| 303-996
| A |
Denver |
CO |
DNVRCOETPS0 |
3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
656 |
|
|
|
| 303-997
| A |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
|
|
| 303-997
| 0 |
Denver |
CO |
DNVTCOZIDS1 |
026D ONVOY, LLC - CO |
656 |
|
2006-01-27 |
|
| 303-997
| 1 |
Denver |
CO |
DNVTCOZIDS1 |
026D ONVOY, LLC - CO |
656 |
|
2006-01-27 |
|
| 303-997
| 2 |
Denver |
CO |
DNVTCOZIDS1 |
026D ONVOY, LLC - CO |
656 |
|
2007-01-27 |
|
| 303-997
| 3 |
Denver |
CO |
DNVTCOZIDS1 |
026D ONVOY, LLC - CO |
656 |
|
2007-01-27 |
|
| 303-997
| 4 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-997
| 5 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-997
| 6 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-997
| 7 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-997
| 8 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-997
| 9 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-03-17 |
|
| 303-998
| A |
Denver |
CO |
BLDRCOMADS0 |
9636 QWEST CORPORATION |
656 |
|
|
|
| 303-999
| A |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
|
|
| 303-999
| 0 |
Denver |
CO |
DNVRCOMA39Z |
318J COMCAST IP PHONE, LLC |
656 |
|
2007-10-30 |
|
| 303-999
| 1 |
Denver |
CO |
DNVRCOMD4MD |
6010 NEW CINGULAR WIRELESS PCS, LLC |
656 |
|
2008-06-01 |
|
| 303-999
| 2 |
Denver |
CO |
DNVRCOETPS0 |
3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
656 |
|
2008-02-04 |
|
| 303-999
| 3 |
Denver |
CO |
DNVRCOETPS0 |
3467 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM |
656 |
|
2008-05-03 |
|
| 303-999
| 4 |
Denver |
CO |
AURSCOFWDS0 |
4574 LEVEL 3 TELECOM OF COLORADO, LLC - CO |
656 |
|
2008-05-07 |
|
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Last updated: Wed, 04 Mar 2026 03:00:52 UTC
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