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Server-rendered context for this exact phone page based on public records, reports, search interest, and routing data already stored on phone.gd.
312-421-8500 currently has limited public identity data on phone.gd. The page still provides exact-number routing, carrier, and line-type context even when named business or complaint evidence is light.
Carrier or assignee data points to ILLINOIS BELL TEL CO and the rate center is CHICGOZN01 (CHICAGO ZONE 01, IL).
The area code you entered, 312, overlaps with the DSN network for the Continental United States and Puerto Rico under Northern Command (NORTHCOM), though it could also be part of standard civilian phone numbers.
The rows below combine cached caller-intelligence data, NANPA assignment records, public business matches, and phone.gd lookup context.
| Label | Value |
|---|---|
| Input Number | 312-421-8500 |
| Phone Number | +13124218500 |
| National Format | (312) 421-8500 |
| Country Code | US |
| Caller Name | BELSTONE TILE & STONE SALES OF ILLINOIS INC MILLWORK LLC MARGRAF USA |
| Caller Type | |
| Carrier Name | ILLINOIS BELL TEL CO |
| Phone Type | |
| Apple iMessage Status | Not Registered |
| Raw Number | 3124218500 |
| Basic Format | 312-421-8500 |
| NPA (Area Code) | 312 |
| NXX | 421 |
| Rate Center | CHICGOZN01 |
| Location | CHICAGO ZONE 01, IL |
| OCN (Carrier Number) | 9329 |
| Call Type | Unknown Type |
| Number Assignment | Assigned |
| Search |
 |
Stored business records list this exact phone number.
| Name | Category | Address | Contact |
|---|---|---|---|
| BELSTONE | Motor carrier | 1439 W HUBBARD ST CHICAGO IL 60622 | 312-421-8500 |
| MILLWORK LLC | Motor carrier | 1439 W HUBBARD ST CHICAGO IL 60642 | 312-421-8500 ST.OGRISEK@MARGRAF-USA.COM |
| state | IL |
| ocn | 9329 |
| company | ILLINOIS BELL TEL CO |
| rate_center | CHICGOZN01 |
| Location | CHICAGO ZONE 01, IL |
| use_type | AS |
| pooled_code | N |
| in_service | Yes |
Synced commercial carrier and manufacturer records for this number. Last sync: 2026-05-01 07:02:16 UTC. View all matching records on dot.report.
| Company | Record | Address | Contact | Links |
|---|---|---|---|---|
| MARGRAF USA DBA: MILLWORK LLC | FMCSA carrier Matched on phone | 1439 W HUBBARD ST, CHICAGO, IL, 60642, US | Phone: (312) 421-8500 Email: ST.OGRISEK@MARGRAF-USA.COM | USDOT 4254685 Record Phone page |
| MARMO INC | FMCSA carrier Matched on phone | 1439 W HUBBARD ST, CHICAGO, IL, 60642-6343, US | Phone: (312) 421-8500 Fax: (312) 421-8515 Email: HENRY@MARMOSTONE.NET | USDOT 2854645 Record Phone page |
| TILE & STONE SALES OF ILLINOIS INC DBA: BELSTONE | FMCSA carrier Matched on phone | 1439 W HUBBARD ST, CHICAGO, IL, 60622, US | Phone: (312) 421-8500 | USDOT 615737 Record Phone page |
| Bold | 𝟑𝟏𝟐-𝟒𝟐𝟏-𝟖𝟓𝟎𝟎 [click to copy] |
| Full-Width | ３１２-４２１-８５００ [click to copy] |
| Superscript | ³¹²-⁴²¹-⁸⁵⁰⁰ [click to copy] |
| Subscript | ₃₁₂-₄₂₁-₈₅₀₀ [click to copy] |
| Enclosed Alphanumerics | ③①②-④②①-⑧⑤⓪⓪ [click to copy] |
| Mathematical Bold | 𝟯𝟭𝟮-𝟰𝟮𝟭-𝟴𝟱𝟬𝟬 [click to copy] |
| Mathematical Italic | 𝟥𝟣𝟤-𝟦𝟤𝟣-𝟪𝟧𝟢𝟢 [click to copy] |
| Mathematical Sans-Serif | 𝟹𝟷𝟸-𝟺𝟸𝟷-𝟾𝟻𝟶𝟶 [click to copy] |
| Emoji | 3️⃣1️⃣2️⃣-4️⃣2️⃣1️⃣-8️⃣5️⃣0️⃣0️⃣ [click to copy] |
| Spelled Out | three one two - four two one - eight five zero zero [click to copy] |
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