531 area code — Omaha, NE geographic
531 is the area code for Omaha, Nebraska, in service since March 26, 2011, Central time. The same territory is also served by its overlay code (402/531 complex). Keep in mind the code identifies where the number was registered; the person calling may be elsewhere.
The code currently holds 260 working prefixes, held by 37 different carriers. Of these, 260 are pooled prefixes shared by multiple carriers. Numbers are anchored to 104 rate centers — billing localities that fix where each prefix belongs.
Use this page to decode where 531 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Local calls inside 531 are dialed 10D.
The current NANPA exhaust forecast for the 402/531 complex is 1Q 2040.
The code was carved out of 402 (2011).
Largest localities in 531
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Omaha | 81 | 402 |
| Lincoln | 24 | 402 |
| Aurora | 10 | 402 |
| Fremont | 5 | 402 |
| Columbus | 4 | 402 |
| Oakland | 3 | 402 |
| Norfolk | 3 | 402 |
| Ainsworth | 3 | 402 |
| Schuyler | 3 | 402 |
| Plattsmouth | 3 | 402 |
FAQ
Will 531 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2040 — decades of capacity remain.
Why am I getting spam calls from 531 numbers?
Scammers spoof recognizable area codes so calls look local or familiar. A displayed 531 number does not prove the call originated there — see our guide to spotting spoofed calls.
Where is a 531 number from?
531 is assigned to Omaha and surrounding areas of Nebraska in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.