Catonsville, MD — rate center
- State
- Maryland
- Active prefixes
- 69
- Carriers
- 13
- Pooled prefixes
- 39
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
Catonsville is a telephone rate center in Maryland served by area codes 410, 443, 667. A rate center is the locality the phone industry uses to anchor numbers for billing; every prefix listed below is registered here.
The rate center currently carries 69 working prefixes, held by 13 different carriers. Pooling applies to 39 of them — individual thousands-blocks may belong to different companies.
The rate center belongs to the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. Routing-wise it sits in LATA 238.
Because 410, 443, 667 all serve this territory, two Catonsville numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Catonsville prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Catonsville
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-206 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-227 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-245 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-292 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-294 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-302 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-370 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-402 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-428 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-440 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-446 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-455 | VERIZON MARYLAND, INC. | No |
| 410-491 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-530 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-599 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-608 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-615 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-718 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-719 | VERIZON MARYLAND, INC. | No |
| 410-733 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-744 | VERIZON MARYLAND, INC. | No |
| 410-747 | VERIZON MARYLAND, INC. | No |
| 410-788 | VERIZON MARYLAND, INC. | No |
| 410-802 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-807 | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-818 | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-852 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-868 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-869 | VERIZON MARYLAND, INC. | Yes |
| 410-917 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-926 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-948 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-971 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-978 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-979 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
FAQ
What area code is Catonsville, MD?
Catonsville is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Catonsville have?
69 active NXX prefixes are anchored to this rate center in NANPA records, held by 13 carriers.
Is a call from a Catonsville prefix really from Catonsville?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.