Prefix 202-600 — Washington Zone 1, DC

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

Area code
202
Prefix (NXX)
600
Rate center
Washington Zone 1
State
District of Columbia
Time zone
Eastern
Code holder
ONVOY, LLC - DC
OCN
850D
Pooled
Yes (thousands-block pooling)
Assigned
2009-12-28
LATA
236

Numbers in the 202-600 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 (202-600-XXXX) and pins the number to a billing locality.

The assigned code holder is ONVOY, LLC - DC, operating company number 850D, assigned December 28, 2009. This is a pooled prefix — expect numbers within it to be split across more than one carrier in 1,000-number blocks.

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 202-600
PrefixRate centerCode holder
202-597 Washington Zone 1 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC
202-598 Washington Zone 1 VERIZON WASHINGTON DC, INC.
202-599 Washington Zone 1 BANDWIDTH.COM CLEC, LLC - DC
202-601 Washington Zone 1 LEVEL 3 TELECOM OF D.C., LLC - DC
202-602 Washington Zone 1 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC
202-603 Washington Zone 1 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - DC

FAQ

Where is 202-600 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 202-600 numbers?

ONVOY, LLC - DC 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 202-600 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.