Area code 430 vs 903
430 and 903 are overlay codes: they cover the same ground in Texas, and a number in one is a local call to the other. 903 is the original, in service since 1990. 430 was added in 2003 because the first was filling up – that is what an overlay is for. Today 430 has 289 of 786 blocks assigned (36.8%) and 903 has 771 of 786 (98.1%), so a new number in the area now almost always comes from 430. In the 33 days to 30 October 2026, 903 drew 1,140 FTC complaints against 214 for 430 – 25th and 335th of 422 ranked codes. Older codes are spoofed more because they look more established. Neither code is better or safer than the other. They are the same geography, the same carriers and the same dialing rules; the difference is only how long each has existed and how full it is.
Side by side
| 430 | 903 | |
|---|---|---|
| In service since | 2003 | 1990 |
| Region | Texas | Texas |
| Blocks assigned | 289 of 786 (36.8%) | 771 of 786 (98.1%) |
| Largest block holder | Other CLEC / VoIP 29.4% | AT&T 26.2% |
| Complaints, 28 Sep – 30 Oct 2026 | 214 (#335) | 1,140 (#25) |
| Rate centers | 159 | 194 |
Block share is allocation by the numbering administrator, not subscribers. Complaint counts cover 28 Sep – 30 Oct 2026 and measure how often each code is spoofed on caller ID.
Frequently asked
What is the difference between area codes 430 and 903?
None geographically – they overlay the same area, so the difference is age and how many numbers are left.
Do I need to dial the area code between 430 and 903?
Yes. Overlay areas use ten-digit dialing for local calls, including between the two codes. Seven digits reaches a recording.
Will a new number be 430 or 903?
Whichever has blocks left – currently 430, at 36.8% allocated against 98.1% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 430 or 903 more likely to be a spam call?
On the complaint data, 903 appears more often. But spoofing drives those counts, so this is about which code gets imitated, not which numbers are real.
Sources
- NANPA – NPA Database (npa_report.csv), file date 11/01/2026, retrieved Nov 1, 2026
- NANPA – CO Code Assignment Records, All States (utilized), file updated 11/01/2026, retrieved Nov 1, 2026
- FTC – Do Not Call Reported Calls Data, 28 Sep – 30 Oct 2026, retrieved Nov 1, 2026
Each code on its own: 430 · 903. All codes in Texas: Texas area codes.