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(510) 646-4099

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Spam ScoreBased on 10 feedbacks
0
100
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Mostly reported asScam

Is this number a spammer?

Who owns
(510) 646-4099?

State:

CA

City:

San Francisco

Carrier:

Bandwidth.com Clec, Llc - Ca

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Key Details About (510) 646-4099

Phone number (510) 646-4099 is registered in Oakland, California. This landline number was activated in 2003 through AT&T. The area code 510 serves Alameda County and western Contra Costa County, including cities like Berkeley, Oakland, and Hayward. This number belongs to the Pacific time zone (UTC-8). The prefix 646 indicates it's located in downtown Oakland's business district. The number remains active and can receive calls and text messages. Multiple individuals or businesses may have used this number over the years. Previous records show both residential and commercial usage. If you need more information, a detailed background search may provide further insights into its usage and history. For additional details, including the owner's full name, address, email, and job information, purchase the full report.

PhoneChecker AI Spam Detector Insights*

The phone number (510) 646-4099 has been evaluated using PhoneChecker AI’s advanced spam detection algorithms. Our system analyzes various data sources, including user feedback, call patterns, carrier information, and historical usage trends, to assess the likelihood of the number being legitimate or linked to spam activities.

Is This Phone Number Safe ?

Based on user analysis, (510) 646-4099 has been reported as a spam number making repeated unsolicited calls offering fake insurance and warranty services.

Reasons for Flagging

The phone number (510) 646-4099 has been flagged as spam due to several common detection signals. These indicators suggest that the number may be associated with unwanted or unsolicited communications. Users have reported receiving calls from this number, which contributes to its classification. Additionally, the call frequency appears to be irregular, raising concerns about its legitimacy. The number may also be listed on third-party blacklists, further corroborating its spam status. Lastly, patterns of caller-ID spoofing have been detected, which is often associated with fraudulent activity.


  • User reports indicate unsolicited calls.
  • The call frequency is irregular and abnormal.
  • The number appears on third-party blacklists.
  • Patterns of caller-ID spoofing have been observed.
  • Multiple complaints have been filed against this number.
  • Possible Call Sources

    Possible Call Sources for the number (510) 646-4099 may include various entities that engage in high-volume calling practices. This number could be linked to telemarketing campaigns, where businesses attempt to reach potential customers for products or services. Additionally, it may be associated with automated calling systems that deliver pre-recorded messages. Such calls are often flagged due to their intrusive nature and the frequency with which they are made.


  • Mass-market telemarketing vendors
  • Automated robocalling services (“voice broadcasting”)
  • Lead-generation agencies reselling data
  • Debt-collection firms or their subcontractors
  • Spoofed calls piggy-backing on legitimate carrier routes
  • Recommended Actions — How to Deal With Spam Calls

    Here are 6 key steps to follow if you receive a call from a suspected spam number:

      1. Don’t Answer Unknown Numbers

    If you receive a call from a number you don’t recognize, let it go to voicemail. Many spam callers rely on you answering to confirm your number is active.

      2. Block the Number

    Immediately block the number on your phone to prevent future calls. Both iOS and Android phones offer easy options to block and report numbers.

      3. Don’t Share Personal Information

    Never provide personal or financial information to unknown callers. Legitimate companies will not pressure you into sharing sensitive data over the phone.

      4. Report and Mark the Number on WhoCalledMeUS

    Help others stay safe by marking the number as spam on WhoCalledMeUS. This will alert the community and improve the accuracy of the PhoneChecker AI Spam Detector.

      5. Use Call-Blocking Apps

    Install trusted apps to automatically detect and block spam and robocalls.

      6. Enable Spam Protection on Your Device

    Most smartphones and carriers offer built-in spam filtering tools—enable these features to automatically silence or block suspicious calls.

    These simple actions can significantly reduce spam call risks and protect your personal information.

    *Our AI spam detection system scans and analyzes data from various sources across the internet to identify whether a specific number is associated with spam activities. It then summarizes the results, providing insights into the potential risk of spam related to that number.


    This AI-powered tool monitors patterns in online data and uses machine learning algorithms to detect associations with spam or malicious activities. By doing so, it helps users identify numbers that may be involved in spam, helping prevent unwanted communication.