Hampstead, MD — rate center
- State
- Maryland
- Active prefixes
- 9
- Carriers
- 7
- Pooled prefixes
- 9
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
Phone numbers "from Hampstead" are, precisely speaking, numbers whose prefixes are anchored to the Hampstead rate center of Maryland, under 410, 443, 667.
NANPA records show 9 active prefixes here across 7 carriers. 9 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 Hampstead 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 Hampstead
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-374 | VERIZON MARYLAND, INC. | Yes |
FAQ
What area code is Hampstead, MD?
Hampstead is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Hampstead have?
9 active NXX prefixes are anchored to this rate center in NANPA records, held by 7 carriers.
Is a call from a Hampstead prefix really from Hampstead?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.