Area code 484 vs 835
484 and 835 are overlay codes: they cover the same ground in Pennsylvania, and a number in one is a local call to the other. 484 is the original, in service since 1999. 835 was added in 2022 because the first was filling up – that is what an overlay is for. Today 484 has 786 of 786 blocks assigned (100.0%) and 835 has 111 of 786 (14.1%), so a new number in the area now almost always comes from 835. In the 33 days to 30 October 2026, 484 drew 593 FTC complaints against 80 for 835 – 174th and 381st 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
| 484 | 835 | |
|---|---|---|
| In service since | 1999 | 2022 |
| Region | Pennsylvania | Pennsylvania |
| Blocks assigned | 786 of 786 (100%) | 111 of 786 (14.1%) |
| Largest block holder | Windstream 19.7% | AT&T 45.9% |
| Complaints, 28 Sep – 30 Oct 2026 | 593 (#174) | 80 (#381) |
| Rate centers | 79 | 31 |
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 484 and 835?
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 484 and 835?
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 484 or 835?
Whichever has blocks left – currently 835, at 14.1% allocated against 100.0% for the other. Carriers draw from the code with free blocks, which is why the newer code spreads over time.
Is 484 or 835 more likely to be a spam call?
On the complaint data, 484 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: 484 · 835. All codes in Pennsylvania: Pennsylvania area codes.