La Grange, IL — rate center
- State
- Illinois
- Active prefixes
- 256
- Carriers
- 15
- Pooled prefixes
- 129
- LATA
- 358
- Metro area
- Chicago-Naperville-Elgin, IL-IN MSA
In NANP numbering, La Grange, Illinois is a rate center — the anchor point for local numbers. It is reached through 312, 464, 630, 708, 815, 847 (multiple area codes serve it).
NANPA records show 256 active prefixes here, held by 15 different carriers. Pooling applies to 129 of them — individual thousands-blocks may belong to different companies.
The rate center belongs to the Chicago-Naperville-Elgin, IL-IN Metropolitan Statistical Area. Routing-wise it sits in LATA 358.
Because 312, 464, 630, 708, 815, 847 all serve this territory, two La Grange numbers can look completely different while being neighbors — check the prefix, not just the area code.
La Grange ranks among the larger numbering localities in Illinois: 256 prefixes mean over 2,560,000 assignable numbers anchored here.
As always with US numbering: a prefix anchored to La Grange 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 La Grange
| Prefix | Code holder | Pooled |
|---|---|---|
| 312-295 | SPOK, INC. | No |
| 312-318 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Yes |
| 312-367 | SPOK, INC. | No |
| 312-403 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Yes |
| 312-501 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Yes |
| 312-717 | SPOK, INC. | No |
| 312-968 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Yes |
| 312-969 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | Yes |
FAQ
What area code is La Grange, IL?
La Grange is served by 6 area codes — 312, 464, 630, 708, 815, 847 — which overlay the same territory.
How many prefixes does La Grange have?
256 active NXX prefixes are anchored to this rate center in NANPA records, held by 15 carriers.
Is a call from a La Grange prefix really from La Grange?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.