Fixing: "This phone number could not be verified. Please try again or use a different number." on Kraken
Stuck on Kraken verification? This exact error means the carrier lookup flagged your number as virtual. A physical carrier line resolves it instantly.
Error Diagnostics
To verify“This phone number could not be verified. Please try again or use a different number.”
Diagnostic: KRAKEN_LINE_REJECT classification resolved via T-Mobile Network physical routing node.
3-step fix
- 1
Rent a dedicated line
Choose a US line routed through T-Mobile Network and complete checkout with crypto — no KYC required.
- 2
Enter it into Kraken
Paste your new number into the Kraken 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 Kraken rejects it — the same check their servers run against you.
What's actually happening behind this error
Behind the scenes, Kraken 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. Kraken's registration backend hard-codes a rejection 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: Kraken and dozens of other platforms share overlapping carrier-lookup blocklists. Once a range gets flagged by one lookup provider, that flag often propagates across providers — 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 private US cellular network covers the entire United States, routing genuine cellular lines from Boston to San Diego. Kraken'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 Kraken's carrier-lookup check — search a state or area code below.
Who actually needs this for Kraken?
The Crypto Trader
Passing KYC-adjacent phone checks on exchanges without tying every account to one exposed number.
Pain Point: Hitting "this phone number is already bound to the maximum number of accounts" mid-onboarding.
Outcome: A dedicated physical line per exchange account, none of them sharing a footprint.
The Freelancer
Verifying client accounts, invoicing platforms, and marketplace profiles without exposing a personal number.
Pain Point: Burning a personal number on every new client platform, then getting locked out when support asks for "the original verification number."
Outcome: A dedicated line per platform — reused for renewals, never shared, never flagged.
Renters who hit this exact error
“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.”
“Binance kept rejecting my main number for a second account. Rented a dedicated line here and it passed the carrier check on the first attempt.”
Frequently asked questions
Not the right platform?
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 Kraken 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 Kraken or their respective parent companies.