Prefix 410-238 — Essex, MD

NANPA CO code assignment, current as of July 28, 2026.

410-238 identifies a block of numbers in Essex, MD, within the 410 area code. Every US prefix is tied to exactly one rate center; this one is Essex.

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 — 410-238 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.

NANPA's central-office code records list VERIZON MARYLAND, INC. (OCN 9212) as the code holder. Because 410-238 participates in thousands-block pooling, individual 1,000-number blocks may belong to other carriers than the code holder.

Neighboring prefixes

FAQ

Where is 410-238 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 410-238 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 410-238 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.