Hinsdale, IL — rate center
- State
- Illinois
- Active prefixes
- 120
- Carriers
- 13
- Pooled prefixes
- 70
- LATA
- 358
- Metro area
- Chicago-Naperville-Elgin, IL-IN MSA
In NANP numbering, Hinsdale, Illinois is a rate center — the anchor point for local numbers. It is reached through 312, 331, 630, 708, 847 (multiple area codes serve it).
120 central-office prefixes are currently anchored to this rate center, held by 13 different carriers. Pooling applies to 70 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, 331, 630, 708, 847 all serve this territory, two Hinsdale numbers can look completely different while being neighbors — check the prefix, not just the area code.
Hinsdale ranks among the larger numbering localities in Illinois: 120 prefixes mean over 1,200,000 assignable numbers anchored here.
Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.
Prefixes anchored to Hinsdale
| Prefix | Code holder | Pooled |
|---|---|---|
| 312-301 | NEW CINGULAR WIRELESS PCS, LLC - IL | No |
| 312-304 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-314 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-352 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-510 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-531 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-699 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-749 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-816 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-844 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
| 312-990 | NEW CINGULAR WIRELESS PCS, LLC - IL | Yes |
FAQ
What area code is Hinsdale, IL?
Hinsdale is served by 5 area codes — 312, 331, 630, 708, 847 — which overlay the same territory.
How many prefixes does Hinsdale have?
120 active NXX prefixes are anchored to this rate center in NANPA records, held by 13 carriers.
Is a call from a Hinsdale prefix really from Hinsdale?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.