Westfield, IN — rate center
- State
- Indiana
- Active prefixes
- 10
- Carriers
- 5
- Pooled prefixes
- 8
- LATA
- 336
- Metro area
- Indianapolis-Carmel-Greenwood, IN MSA
The Westfield rate center (Indiana) anchors 10 active prefixes under area codes 317, 463. Rate centers, not city limits, are what phone numbers are legally tied to.
NANPA records show 10 active prefixes here across 5 carriers. 8 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Indianapolis-Carmel-Greenwood, IN Metropolitan Statistical Area. Routing-wise it sits in LATA 336.
Multiple area codes over one rate center (317/463) is the overlay pattern: same geography, different first three digits.
As always with US numbering: a prefix anchored to Westfield tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.
Prefixes anchored to Westfield
| Prefix | Code holder | Pooled |
|---|---|---|
| 317-399 | LEVEL 3 TELECOM OF INDIANA, LP - IN | Yes |
| 317-763 | BANDWIDTH.COM CLEC, LLC - IN | Yes |
| 317-785 | BANDWIDTH.COM CLEC, LLC - IN | Yes |
| 317-804 | FRONTIER NORTH, INC.. - IN | Yes |
| 317-867 | FRONTIER NORTH, INC.. - IN | No |
| 317-877 | FRONTIER NORTH, INC.. - IN | No |
| 317-896 | FRONTIER NORTH, INC.. - IN | Yes |
FAQ
What area code is Westfield, IN?
Westfield is served by 2 area codes — 317, 463 — which overlay the same territory.
How many prefixes does Westfield have?
10 active NXX prefixes are anchored to this rate center in NANPA records, held by 5 carriers.
Is a call from a Westfield prefix really from Westfield?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.