Westminster, MD — rate center
- State
- Maryland
- Active prefixes
- 28
- Carriers
- 14
- Pooled prefixes
- 19
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
The Westminster rate center (Maryland) anchors 28 active prefixes under area codes 410, 443, 667. Rate centers, not city limits, are what phone numbers are legally tied to.
NANPA records show 28 active prefixes here across 14 carriers. 19 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. Routing-wise it sits in LATA 238.
Multiple area codes over one rate center (410/443/667) is the overlay pattern: same geography, different first three digits.
As always with US numbering: a prefix anchored to Westminster tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.
Prefixes anchored to Westminster
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-259 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-386 | VERIZON MARYLAND, INC. | No |
| 410-596 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-751 | VERIZON MARYLAND, INC. | No |
| 410-848 | VERIZON MARYLAND, INC. | No |
| 410-857 | VERIZON MARYLAND, INC. | No |
| 410-861 | VERIZON MARYLAND, INC. | Yes |
| 410-871 | VERIZON MARYLAND, INC. | Yes |
FAQ
What area code is Westminster, MD?
Westminster is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Westminster have?
28 active NXX prefixes are anchored to this rate center in NANPA records, held by 14 carriers.
Is a call from a Westminster prefix really from Westminster?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.