Area codes · +1
Area code 657
Area code 657 covers Anaheim, California. We hold 7,592 allocated blocks for it across 13 rate centres, split 80% mobile, 13% landline and 7% VoIP.
The other area codes laid over 657
Area code 657 does not have Anaheim to itself. 1 other code — 714 — 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.
7144,980 blocks, 15 rate centres, mostly mobile
Each holds its own blocks and its own carrier mix, so a 657 number and a 714 number from the same street can report different line types. Filtering Anaheim by area code needs all 2 of them.
657 is not confined to Anaheim itself: its blocks sit across 13 rate centres, named in the table below.
California is split across 40 area codes — 657, 707, 559, 209, 530, 213 and others. By allocated blocks 657 is the largest of them, holding 4% of the California total.
Where 657 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Huntitnbch and Garden Grv 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 657 |
|---|---|---|
| Anaheim | 1,738 | 23% |
| Huntitnbch | 1,529 | 20% |
| Santa Ana | 1,287 | 17% |
| Westminstr | 649 | 9% |
| Silverado | 583 | 8% |
| Orange | 459 | 6% |
| Garden Grv | 320 | 4% |
| Cypress | 294 | 4% |
| Fullerton | 286 | 4% |
| Yorbalinda | 121 | 2% |
| Buena Park | 117 | 2% |
| Placentia | 115 | 2% |
| Brea | 86 | 1% |
Carriers holding the most 657 blocks
Verizon Wireless4,897 blocks
Onvoy485 blocks
AT&T Wireless400 blocks
Bandwidth332 blocks
T-Mobile Usa, Inc.313 blocks
T-Mobile USA, Inc.275 blocks
Verizon Wireless alone holds 65% of every block in 657, which is unusually concentrated for an area code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 657 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 657 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 657?
Area code 657 covers Anaheim, California. It is not the only code there: 714 is an overlay on the same rate centres, so a Anaheim, California number can start with any of them.
Is a 657 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 657 the split runs 80% mobile, 13% landline and 7% VoIP, so mobile is the most likely single answer.
Which carriers hold 657 numbers?
The largest holders are Verizon Wireless, Onvoy, 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 657 numbers are there?
The code holds 7,592 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 657 covers on the order of 7,592,000 possible numbers — most of which have never been issued to anyone.