Prefix 410-406 — Essex, MD
The 410-406 prefix belongs to area code 410 and is anchored to the Essex rate center (MD). In NANP terms, the prefix — or NXX — determines the rate center a number is billed against.
Essex is part of the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. For routing purposes it sits in LATA 238. Numbers here keep Eastern time.
NANPA's central-office code records list MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD (OCN 7228) as the code holder. Because 410-406 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.
Caller ID showing 410-406 is not proof the call came from Essex: spoofing and porting both detach numbers from their origin. To verify a caller, hang up and dial the organization's published number, and report suspicious calls to the FTC.
Neighboring prefixes
| Prefix | Rate center | Code holder |
|---|---|---|
| 410-403 | Cockeysville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD |
| 410-404 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
| 410-405 | Fork | VERIZON MARYLAND, INC. |
| 410-407 | Elkridge | VERIZON MARYLAND, INC. |
| 410-408 | Towson | SPOK, INC. |
| 410-409 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD |
FAQ
Where is 410-406 located?
The prefix is assigned to the Essex rate center in MD, area code 410. It is part of the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area.
Which company owns 410-406 numbers?
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD 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 410-406 safe to answer?
The prefix itself says nothing about the caller. Legitimate Essex businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.