Prefix 410-421 — Severna Park, MD
- Area code
- 410
- Prefix (NXX)
- 421
- Rate center
- Severna Park
- State
- Maryland
- Time zone
- Eastern
- Code holder
- VERIZON MARYLAND, INC.
- OCN
- 9212
- Pooled
- Yes (thousands-block pooling)
- LATA
- 238
410-421 identifies a block of numbers in Severna Park, MD, within the 410 area code. Every US prefix is tied to exactly one rate center; this one is Severna Park.
The rate center lies in the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. The serving LATA is 238. Local time follows the Eastern zone.
Treat the on-screen number as a hint, not evidence — 410-421 can be spoofed like any US prefix. If a call feels off, verify through an official callback number and file a complaint with the FCC or FTC.
Code-holder of record: VERIZON MARYLAND, INC. (OCN 9212). The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 410-421 numbers may be served by different companies.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 410-418 | Ellicott City | VERIZON MARYLAND, INC. |
| 410-419 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC |
| 410-420 | Bel Air | VERIZON MARYLAND, INC. |
| 410-422 | Salisbury | NEW CINGULAR WIRELESS PCS, LLC - DC |
| 410-423 | Columbia | TELEPORT COMMUNICATIONS AMERICA, LLC - MD |
| 410-424 | Glen Burnie | VERIZON MARYLAND, INC. |
FAQ
Where is 410-421 located?
The prefix is assigned to the Severna Park rate center in MD, area code 410. It is part of the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area.
Which company owns 410-421 numbers?
VERIZON MARYLAND, INC. holds the code, but the prefix is pooled — individual thousands-blocks can be assigned to other carriers, and numbers may be ported to any provider.
Is a call from 410-421 safe to answer?
The prefix itself says nothing about the caller. Legitimate Severna Park businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.