Randallstown, MD — rate center
- State
- Maryland
- Active prefixes
- 16
- Carriers
- 9
- Pooled prefixes
- 12
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
The Randallstown rate center (Maryland) anchors 16 active prefixes under area codes 410, 443, 667. Rate centers, not city limits, are what phone numbers are legally tied to.
The rate center currently carries 16 working prefixes across 9 carriers. 12 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.
A Randallstown 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 Randallstown
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-496 | VERIZON MARYLAND, INC. | No |
| 410-521 | VERIZON MARYLAND, INC. | No |
| 410-655 | VERIZON MARYLAND, INC. | No |
| 410-701 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-922 | VERIZON MARYLAND, INC. | No |
FAQ
What area code is Randallstown, MD?
Randallstown is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Randallstown have?
16 active NXX prefixes are anchored to this rate center in NANPA records, held by 9 carriers.
Is a call from a Randallstown prefix really from Randallstown?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.