Area codes · +1
Area code 350
Area code 350 is centred on Modesto, California. We hold 731 allocated blocks for it across 41 rate centres, split 46% mobile, 1% landline and 53% VoIP.
The other area codes laid over 350
Area code 350 does not have Modesto to itself. 1 other code — 209 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
2096,612 blocks, 63 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 350 number and a 209 number from the same street can report different line types. Filtering Modesto by area code needs all 2 of them.
350 is not confined to Modesto itself: its blocks sit across 41 rate centres, named in the table below.
California is split across 40 area codes — 657, 707, 559, 209, 530, 350 and others. By allocated blocks 350 is the 37th largest of them, holding 0% of the California total.
Where 350 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Tracy and Valley Spg are shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 350 |
|---|---|---|
| Modesto | 103 | 14% |
| Stockton | 101 | 14% |
| Atwater | 65 | 9% |
| Turlock | 44 | 6% |
| Manteca | 42 | 6% |
| Tracy | 39 | 5% |
| Lodi | 35 | 5% |
| Merced | 20 | 3% |
| Los Banos | 19 | 3% |
| Galt | 16 | 2% |
| Oakdale | 16 | 2% |
| Valley Spg | 16 | 2% |
| Jackson | 15 | 2% |
| Clements | 14 | 2% |
| Snelling | 14 | 2% |
| Dos Palos | 13 | 2% |
| Hughson | 10 | 1% |
| Newman | 10 | 1% |
| Patterson | 10 | 1% |
| Planada | 10 | 1% |
| Snra Main | 10 | 1% |
| Riverbank | 9 | 1% |
| Wtfr Main | 9 | 1% |
| Yosemite | 9 | 1% |
17 further rate centres in 350 hold fewer blocks than these.
Carriers holding the most 350 blocks
Onvoy222 blocks
Verizon Wireless100 blocks
AT&T Wireless88 blocks
T-Mobile Usa, Inc.73 blocks
Onvoy Spectrum58 blocks
Commio, Llc45 blocks
The largest holder, Onvoy, has 30% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 350 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 350 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 350?
Area code 350 covers Modesto, California. It is not the only code there: 209 is an overlay on the same rate centres, so a Modesto, California number can start with any of them.
Is a 350 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 350 the split runs 46% mobile, 1% landline and 53% VoIP, so VoIP is the most likely single answer.
Which carriers hold 350 numbers?
The largest holders are Onvoy, Verizon Wireless, AT&T Wireless. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 350 numbers are there?
The code holds 731 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 350 covers on the order of 731,000 possible numbers — most of which have never been issued to anyone.