Area Code Lookup

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397 IN-SERVICE CODES
DATA 07/30/2026

528

In-service U.S. numbering code

528 Area Code

Non-Geographic Services · Eastern Time

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Location
Non-Geographic Services
Time zone
Eastern Time
In service since
02-Mar-2022
NANPA status
In service
Overlay codes
500, 521, 522, 523, 524, 525, 526, 527, 529, 532, 533, 538, 542, 544, 566, 577, 588
City references
No curated city reference is assigned on this site
Service type
Non-Geographic Services
Source date
07/30/2026

This is a special or non-geographic code. A city or state should not be inferred from it.

What the 528 area code means

It participates in an overlay complex with 500, 521, 522, 523, 524, 525, 526, 527, 529, 532, 533, 538, 542, 544, 566, 577, 588, so those codes can serve the same or overlapping numbering region. A number carrying this code is not proof of the caller’s current location.

Codes in the same overlay complex

528Eastern Time500Eastern Time521Eastern Time522Eastern Time523Eastern Time524Eastern Time525Eastern Time526Eastern Time527Eastern Time529Eastern Time532Eastern Time533Eastern Time538Eastern Time

Data source and limitations

The status fields above come from the NANPA NPA report dated 07/30/2026. City references are curated for navigation and do not replace exchange-level carrier data. Number portability also means a person can keep a number after moving.

Open the official NANPA CSV source.

Last updated: July 23, 2026

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Information the tool uses

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Data accuracy

Area-code status, state or territory, overlay relationships, service type, and in-service dates are derived from the NANPA NPA database. An area code can cover many communities, and a city label is a practical lookup aid rather than proof that a specific number or caller is physically located there.

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The service is provided “as is.” Numbering plans change, and no result should be treated as emergency, legal, financial, identity, or fraud-verification advice.

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