Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.
Server-rendered context for this exact phone page based on public records, reports, search interest, and routing data already stored on phone.gd.
773-628-1000 is most strongly associated on phone.gd with Power Semiconductors - Littelfuse in CHICAGO ZONE 03, IL.
Carrier or assignee data points to TELEPORT COMMUNICATIONS AMERICA, LLC - IL and the rate center is CHICGOZN03 (CHICAGO ZONE 03, IL).
The rows below combine cached caller-intelligence data, NANPA assignment records, public business matches, and phone.gd lookup context.
| Label | Value |
|---|---|
| Input Number | 773-628-1000 |
| Phone Number | +17736281000 |
| National Format | (773) 628-1000 |
| Country Code | US |
| Caller Name | LITTELFUSE INC /DE |
| Caller Type | |
| Carrier Name | TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
| Phone Type | |
| Apple iMessage Status | Not Registered |
| Raw Number | 7736281000 |
| Basic Format | 773-628-1000 |
| NPA (Area Code) | 773 |
| NXX | 628 |
| Rate Center | CHICGOZN03 |
| Location | CHICAGO ZONE 03, IL |
| OCN (Carrier Number) | 7136 |
| Call Type | Unknown Type |
| Number Assignment | Reserved for Toll-free |
| Search |
 |
These stored listings match the exact phone number, which helps reinforce any named caller identity shown above.
| Source | Name | Detail |
|---|---|---|
| SEC company registration | LITTELFUSE INC /DE | LFUS · Switchgear & Switchboard Apparatus · 6133 NORTH RIVER ROAD SUITE 500 ROSEMONT IL 60018 US |
These public EDGAR submission profiles list this exact phone number for a registered company.
| Company | Identifiers | Industry | Business Address |
|---|---|---|---|
| LITTELFUSE INC /DE | CIK 0000889331 LFUS · Nasdaq | Switchgear & Switchboard Apparatus | 6133 NORTH RIVER ROAD SUITE 500 ROSEMONT IL 60018 US |
| state | IL |
| ocn | 7136 |
| company | TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
| rate_center | CHICGOZN03 |
| Location | CHICAGO ZONE 03, IL |
| use_type | AS |
| pooled_code | Y |
| in_service | Yes |
| region | MW |
| state | IL |
| status | RT |
| rate_center | CHICGOZN03 |
| Location | CHICAGO ZONE 03, IL |
| assigned_to | TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
| ocn | 7136 |
| region | MW |
| state | IL |
| status | RT |
| rate_center | CHICGOZN03 |
| Location | CHICAGO ZONE 03, IL |
| assigned_to | TELEPORT COMMUNICATIONS AMERICA, LLC - IL |
| ocn | 7136 |
This phone number is found listed on the following websites:
 Power Semiconductors - Littelfuse | www.littelfuse.com |
| Bold | 𝟕𝟕𝟑-𝟔𝟐𝟖-𝟏𝟎𝟎𝟎 [click to copy] |
| Full-Width | ７７３-６２８-１０００ [click to copy] |
| Superscript | ⁷⁷³-⁶²⁸-¹⁰⁰⁰ [click to copy] |
| Subscript | ₇₇₃-₆₂₈-₁₀₀₀ [click to copy] |
| Enclosed Alphanumerics | ⑦⑦③-⑥②⑧-①⓪⓪⓪ [click to copy] |
| Mathematical Bold | 𝟳𝟳𝟯-𝟲𝟮𝟴-𝟭𝟬𝟬𝟬 [click to copy] |
| Mathematical Italic | 𝟩𝟩𝟥-𝟨𝟤𝟪-𝟣𝟢𝟢𝟢 [click to copy] |
| Mathematical Sans-Serif | 𝟽𝟽𝟹-𝟼𝟸𝟾-𝟷𝟶𝟶𝟶 [click to copy] |
| Emoji | 7️⃣7️⃣3️⃣-6️⃣2️⃣8️⃣-1️⃣0️⃣0️⃣0️⃣ [click to copy] |
| Spelled Out | seven seven three - six two eight - one zero zero zero [click to copy] |
Using these number formats when publishing your phone number online can help reduce spam calls/texts by making it harder for scammers to copy your number
Submit an anonymous report
Choose the report type that best matches this number, then optionally add a short note about what happened. Your city and state may be shown publicly, but your IP address is not displayed on the page.
Report a spam or fraud caller
Answer a few quick questions and this page will point you to the right official complaint flow, plus carrier-specific reporting options where available.
Step 1
What happened?
Choose the option that best matches this phone number.
Step 2
How did it reach you?
The FCC and carrier advice changes slightly for calls versus texts.
Step 3
Did they ask for money or sensitive information?
This helps decide whether the FTC should be part of the next step.
Step 4
Which carrier do you use?
Carrier tools help get the number flagged or blocked inside that network.
Latest community reports for 773-628-1000