Area codes · +1
Area code 425
Area code 425 covers Bellevue, Washington. We hold 4,642 allocated blocks for it across 14 rate centres, split 46% mobile, 43% landline and 11% VoIP.
How far area code 425 reaches
Area code 425 covers 14 rate centres, so two 425 numbers are not always a local call to each other.
A rate centre is a billing boundary rather than a postal one, which is why an area code can span several and a single city can contain many. It is also why the code alone cannot place a subscriber beyond a rough region.
Washington is split across 6 area codes — 360, 509, 206, 425, 253, 564. By allocated blocks 425 is the 4th largest of them, holding 18% of the Washington total.
Where 425 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Maple Vly is 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 425 |
|---|---|---|
| Bellevue | 1,304 | 28% |
| Everett | 835 | 18% |
| Bothell | 479 | 10% |
| Kirkland | 460 | 10% |
| Renton | 408 | 9% |
| Halls Lake | 390 | 8% |
| Issaquah | 322 | 7% |
| Silverlake | 149 | 3% |
| Maple Vly | 92 | 2% |
| North Bend | 55 | 1% |
| Ames Lake | 40 | 1% |
| Fall City | 40 | 1% |
| Carnation | 30 | 1% |
| Snoqumpass | 18 | 0% |
Carriers holding the most 425 blocks
Onvoy521 blocks
T-Mobile Usa, Inc.515 blocks
Verizon Wireless464 blocks
T-Mobile USA, Inc.437 blocks
AT&T Wireless422 blocks
Ziply Fiber Northwest, Llc Dba Ziply Fiber231 blocks
No carrier holds more than 11% of 425; the blocks are spread thin across many companies.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 425 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 425 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 425?
Area code 425 covers Bellevue, Washington, spanning 14 rate centres.
Is a 425 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 425 the split runs 46% mobile, 43% landline and 11% VoIP, so mobile is the most likely single answer.
Which carriers hold 425 numbers?
The largest holders are Onvoy, T-Mobile Usa, Inc., Verizon Wireless. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 425 numbers are there?
The code holds 4,642 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 425 covers on the order of 4,642,000 possible numbers — most of which have never been issued to anyone.