Prefix 202-240 — Washington Zone 1, DC

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

Area code
202
Prefix (NXX)
240
Rate center
Washington Zone 1
State
District of Columbia
Time zone
Eastern
Code holder
MCIMETRO ACCESS TRANSMISSION SERVICES LLC
OCN
7229
Pooled
Yes (thousands-block pooling)
Assigned
2021-10-11
LATA
236

Numbers in the 202-240 prefix are registered to the Washington Zone 1 rate center in DC, inside area code 202. The prefix is the second block of a ten-digit US number (202-240-XXXX) and pins the number to a billing locality.

Code-holder of record: MCIMETRO ACCESS TRANSMISSION SERVICES LLC (OCN 7229), assigned October 11, 2021. The prefix is pooled: its ten thousands-blocks can be shared among several carriers, so different 202-240 numbers may be served by different companies.

The rate center lies in the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area. The serving LATA is 236. Local time follows the Eastern zone.

Spoofing means this prefix on your screen doesn't guarantee a Washington Zone 1 caller. Verify independently before trusting a request for money or data.

Neighboring prefixes

Prefixes adjacent to 202-240
PrefixRate centerCode holder
202-237 Washington Zone 1 VERIZON WASHINGTON DC, INC.
202-238 Washington Zone 1 VERIZON WASHINGTON DC, INC.
202-239 Washington Zone 1 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
202-241 Washington Zone 1 YMAX COMMUNICATIONS CORP. - DC
202-242 Washington Zone 1 LEVEL 3 COMMUNICATIONS, LLC - DC
202-243 Washington Zone 1 VERIZON WASHINGTON DC, INC.

FAQ

Where is 202-240 located?

The prefix is assigned to the Washington Zone 1 rate center in DC, area code 202. It is part of the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area.

Which company owns 202-240 numbers?

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 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 202-240 safe to answer?

The prefix itself says nothing about the caller. Legitimate Washington Zone 1 businesses and spoofed robocalls can both display it. Never share personal data with an unverified inbound caller.