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.
| Label | Value |
|---|---|
| Input Number | 423-525-5731 |
| Phone Number | +14235255731 |
| National Format | (423) 525-5731 |
| Country Code | US |
| Caller Name | No public business listing found. Additional phone intelligence quota is exhausted for this month. |
| Caller Type | |
| Carrier Name | COMCAST IP PHONE, LLC |
| Phone Type | |
| Apple iMessage Status | Not Checked |
| Raw Number | 4235255731 |
| Basic Format | 423-525-5731 |
| NPA (Area Code) | 423 |
| NXX | 525 |
| Telco Carrier | COMCAST IP PHONE, LLC |
| Rate Center | GREENEVL |
| OCN (Carrier Number) | 318J |
| Call Type | Unknown Type |
| Number Assignment | Assigned |
| Search |
|
| state | TN |
| ocn | 4806 |
| company | LEVEL 3 COMMUNICATIONS, LLC - TN |
| rate_center | GREENEVL |
| Location | |
| use_type | AS |
| assign_date | 05/14/2008 |
| initial_growth | G |
| pooled_code | Y |
| in_service | Yes |
| region | SE |
| state | TN |
| status | AS |
| rate_center | GREENEVL |
| Location | |
| block_effective_date | 06/26/2009 |
| assigned_to | COMCAST IP PHONE, LLC |
| ocn | 318J |
| date_assigned | 05/27/2009 |
| region | SE |
| state | TN |
| status | AS |
| rate_center | GREENEVL |
| Location | |
| block_effective_date | 06/26/2009 |
| assigned_to | COMCAST IP PHONE, LLC |
| ocn | 318J |
| date_assigned | 05/27/2009 |
| Bold | 𝟒𝟐𝟑-𝟓𝟐𝟓-𝟓𝟕𝟑𝟏 [click to copy] |
| Full-Width | ４２３-５２５-５７３１ [click to copy] |
| Superscript | ⁴²³-⁵²⁵-⁵⁷³¹ [click to copy] |
| Subscript | ₄₂₃-₅₂₅-₅₇₃₁ [click to copy] |
| Enclosed Alphanumerics | ④②③-⑤②⑤-⑤⑦③① [click to copy] |
| Mathematical Bold | 𝟰𝟮𝟯-𝟱𝟮𝟱-𝟱𝟳𝟯𝟭 [click to copy] |
| Mathematical Italic | 𝟦𝟤𝟥-𝟧𝟤𝟧-𝟧𝟩𝟥𝟣 [click to copy] |
| Mathematical Sans-Serif | 𝟺𝟸𝟹-𝟻𝟸𝟻-𝟻𝟽𝟹𝟷 [click to copy] |
| Emoji | 4️⃣2️⃣3️⃣-5️⃣2️⃣5️⃣-5️⃣7️⃣3️⃣1️⃣ [click to copy] |
| Spelled Out | four two three - five two five - five seven three one [click to copy] |
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Latest community reports for 423-525-5731
Anonymous User from Kingsport, Tennessee
January 13, 2026 at 6:33 PM