Area code
Area code 531 — Omaha, NE
Nebraska · in service since March 26, 2011
Area code 531 covers parts of Nebraska; the place with the most of its prefixes is Omaha. It is an overlay: 402 serves the same area, so neighbors can have different area codes.
Overlay, same area: 402
Local time in Omaha
Spam reports from Sep 23 – Oct 22, 2026
Average #340 of 461 codes
184 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneCentral Time
- Local calls10 digits
- Prefixes284 assigned
- Runs out~1Q 2040
- Unwanted call?Block & report
Spam call reports about 531 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 12 |
| Sep 14 | 49 |
| Sep 21 | 39 |
| Sep 28 | 35 |
| Oct 5 | 40 |
| Oct 12 | 54 |
| Oct 19 (4 days) | 34 |
Compared with all codes
- Robocalls
- 63%all codes 75%
- Callers with the same code
- 27%all codes 35%
- Rank by complaints
- #340of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 255 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Reducing your debt (credit cards, mortgage, student loans) | 57 22% | |
| Medical & prescriptions | 49 19% | |
| Calls pretending to be government, businesses, or family and friends | 20 8% | |
| Dropped call or no message | 8 3% | |
| Home improvement & cleaning | 3 1% | |
| Lotteries, prizes & sweepstakes | 2 1% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Nebraska | 124 47% | |
| Virginia | 14 5% | |
| New York | 10 4% | |
| California | 9 3% | |
| Florida | 8 3% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 531 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| OMAHA | Omaha | Douglas County | 83 |
| LINCOLN | Lincoln | Lancaster County | 25 |
| AURORA | Aurora | Hamilton County | 10 |
| COLUMBUS | Columbus | Platte County | 5 |
| FREMONT | Fremont | Dodge County | 5 |
| SOSIOUX CY | South Sioux City | Dakota County | 4 |
| AINSWORTH | Ainsworth | Brown County | 3 |
| CRESTON | Creston | Platte County | 3 |
| HOWELLS | Howells | Colfax County | 3 |
| NORFOLK | Norfolk | Madison County | 3 |
Plus 95 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
NANPA record
- Location
- Nebraska
- Assigned by NANPA
- July 1, 2009
- Local dialing
- 10 digits (NANPA: 10D)
- NANPA planning letters
- PL-410, PL-397, PL-393
Source: NANPA, NPA database of Oct 24, 2026.
Is 531 running out of numbers?
Previous forecast (October 2025): 2038, moved later by 2 years.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 531 prefixes
The five largest of 42 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Onvoy, LLC | 64 23% | |
| New Cingular Wireless PCS, LLC | 24 8% | |
| Verizon Wireless | 23 8% | |
| Teleport Communications America, LLC | 18 6% | |
| Aerial Communications, Inc. | 17 6% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 531
What area code is 531?
A Nebraska area code, in service since March 26, 2011.
Where is 531 area code, and what time zone is it in?
Omaha, NE; Central Time.
Why am I getting spam calls from 531?
184 FTC complaints from Sep 23 – Oct 22, 2026, most often about debt reduction (not verified by the FTC; caller ID can be spoofed).
Will 531 get a new area code?
NANPA forecasts exhaust in 1Q 2040; no relief planning listed.