Why Your Business Calls Show \"Spam Likely\" and What You Can Do
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How we wrote this: A guide based on Federal Communications Commission (FCC) pages on call blocking, caller ID authentication and spoofing (linked below). We have not tested any carrier's or app's labeling system. This isn't legal advice.
You call a customer back and they never pick up, because their phone showed "Spam Likely" or "Scam Likely". For businesses that return calls, confirm appointments or follow up on quotes, that label costs real money. Here's how labeling works and what's in your control.
How calls get blocked or labeled
The FCC's call blocking guide explains that phone companies may block calls linked to suspicious calling patterns, and many also let customers turn on extra blocking or install an app. Some offer labeling instead, showing categories like "spam" or "scam likely" on caller ID. A blocked call might go to voicemail, ring once, or vanish without notice.
Under FCC rules, providers may block calls from unassigned, unallocated or invalid numbers, or numbers on the Do Not Originate list, without customer consent. They may also block calls they judge unwanted from call data analysis, but customers must be able to opt out of that kind.
The FCC notes that false positives happen when a legitimate caller's pattern looks like robocalling.
What STIR/SHAKEN does
The FCC requires voice providers to use the STIR/SHAKEN caller ID authentication framework in their internet-based (IP) networks. In plain terms, the originating carrier digitally "signs" that a call really comes from the number shown, and the receiving carrier checks the signature. This makes spoofed numbers easier to spot and supports blocking and labeling decisions.
For a business, the takeaway is to use a reputable provider that authenticates your outbound calls, and to display only numbers you actually hold.
The FCC's best practices for legitimate callers
From the same FCC guide, under "How businesses can avoid having legitimate calls blocked":
- Always use a valid outgoing number, and never display an invalid one.
- Never set caller ID to a number that isn't yours.
- Don't use a number on the Do Not Originate list.
- Limit calls per minute, especially outside normal business hours.
- Limit how often you call the same numbers back in a short period.
- Check periodically with phone companies and third-party analytics companies about complaints tied to your numbers.
- Leave a consistent callback number in messages, plus other contact details.
- Consider separate numbers for separate purposes. For example, customer-support callbacks are less likely to be blocked if they don't share a number with outbound telemarketing, which may draw complaints.
Get consent and follow the rules
The same FCC guide reminds callers to have the called person's consent. FCC rules require prior written consent before prerecorded telemarketing calls to landlines, or autodialed or prerecorded telemarketing calls to wireless numbers. Non-telemarketing autodialed or prerecorded calls and texts to wireless numbers need oral or written consent, with exceptions such as emergencies. Our Do Not Call rules guide covers the federal registry.
If your outbound calls use an AI-generated voice, our guide to after-hours calls explains the FCC's 2024 ruling that treats those calls as "artificial" voice calls under federal robocall law.
Spoofing: when your number is used by someone else
Sometimes the problem isn't your calls at all. The FCC's spoofing page explains that scammers fake caller ID, sometimes using real businesses' numbers. If people call saying they got a call from you that you didn't make, your number may have been spoofed. The FCC suggests explaining the situation to anyone who calls and considering a voicemail message about it. Scammers usually switch numbers quickly.
The same page notes that some spoofing is legal, such as a business displaying its own toll-free callback number. Displaying a number to defraud or cause harm is illegal under the Truth in Caller ID Act.
If your number is labeled wrongly
- Confirm the label by calling a few phones on different carriers.
- Contact your phone provider and ask whether your outbound calls are authenticated, and how they handle labeling disputes.
- Ask the carriers and analytics companies named in the FCC guide's resource list about their redress process.
- Review your calling pattern against the best practices above.