Sparrows Point, MD — rate center
- State
- Maryland
- Active prefixes
- 10
- Carriers
- 8
- Pooled prefixes
- 8
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
Sparrows Point 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 10 working prefixes, held by 8 different carriers. Pooling applies to 8 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 Sparrows Point numbers can look completely different while being neighbors — check the prefix, not just the area code.
A Sparrows Point 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 Sparrows Point
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-388 | VERIZON MARYLAND, INC. | No |
| 410-477 | VERIZON MARYLAND, INC. | No |
| 410-709 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
FAQ
What area code is Sparrows Point, MD?
Sparrows Point is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Sparrows Point have?
10 active NXX prefixes are anchored to this rate center in NANPA records, held by 8 carriers.
Is a call from a Sparrows Point prefix really from Sparrows Point?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.