Resolve the Block: "We've detected suspicious activity on your account. Please verify your identity." on Facebook
Hit a wall with Facebook verification? That red-banner message means the carrier lookup flagged your number as virtual. A dedicated hardware line resolves it instantly.
Error Diagnostics
“We've detected suspicious activity on your account. Please verify your identity.”
Diagnostic: FB_SUSPICIOUS_ACTIVITY classification resolved via Verizon Network physical routing node.
3-step fix
- 1
Rent a dedicated line
Choose a US line routed through Verizon Network and complete checkout with crypto — no KYC required.
- 2
Enter it into Facebook
Paste your new number into the Facebook verification field exactly as provided, including the country code.
- 3
Receive and enter the code
The SMS code arrives in seconds. Enter it to complete verification — no more VoIP rejection.
Line-Type Diagnostic Scan
Enter any number to run a carrier-registry lookup and see exactly why Facebook rejects it — the same check their servers run against you.
What's actually happening behind this error
Under the hood, Facebook sends your number to a carrier-lookup provider (commonly Twilio Lookup, Telesign, or an equivalent HLR query service) the moment you submit it. The response includes a "line type" field — Mobile, Landline, or VoIP. Facebook's registration backend drops the session whenever that field comes back as VoIP, regardless of anything else about your account, browser, or IP address.
Why a “fresh” free number won't help
The reason a "fresh" free number often fails immediately is simple: Facebook and dozens of other platforms share overlapping carrier-lookup blocklists. A number burned on one platform is frequently already flagged everywhere else — so the "new" number you just got assigned may have failed this exact check hours before you ever touched it.
Usage note: GotSMS lines are intended for legitimate account verification, testing, and privacy purposes. Respect the terms of service of any platform you register on — this guide explains how carrier-lookup filters work, not how to violate a platform's policies.
Nationwide US coverage
Our dedicated US carrier pool spans all 50 states, provisioning real cellular lines from Miami to Seattle. Facebook's carrier-lookup check sees a real, local-looking area code — never a flagged VoIP range.
US Carrier Coverage — All 50 States
Every state routes through a real area code on Facebook's carrier-lookup check — search a state or area code below.
Who actually needs this for Facebook?
The Affiliate / Growth Marketer
Testing landing pages, ad accounts, and multiple platform profiles at scale without a single point of failure.
Pain Point: A single carrier flag cascading into a mass ban across every linked ad account.
Outcome: Isolated verification lines per account — one flag doesn't take the rest down with it.
The Wrongly-Flagged Account Owner
Regaining access to a legitimately-owned account during a ban appeal, when the original number is no longer reachable or was itself the cause of an incorrect flag.
Pain Point: A ban-appeal process requiring the exact same number that caused the original incorrect flag.
Outcome: A working re-verification path that doesn't reintroduce the original flagged number into the appeal.
Renters who hit this exact error
“One flagged number used to take out three ad accounts at once. Splitting verification across dedicated lines fixed that overnight.”
“Needed a US line to re-verify an Upwork account that got flagged. Line was live in under a minute and the code landed instantly. Didn't expect it to just work first try.”
Frequently asked questions
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Reviewed by Victor Reyes, Head of Telecom Infrastructure & SEO, GotSMS. This page is informational and does not constitute financial, legal, or compliance advice.
Disclaimer: All product names, logos, brands, and registered trademarks referenced on this page (including Facebook and corresponding logos) are the sole property of their respective trademark holders. GotSMS, operated by Aurora Art Trading Inc, is an independent US telecommunications provider. References to third-party services are made strictly under the nominative fair use doctrine (15 U.S.C. § 1115(b)(4)) for descriptive, comparative, and compatibility troubleshooting purposes. GotSMS is not affiliated with, sponsored by, or endorsed by Facebook or their respective parent companies.