Are these real SIM cards or VoIP numbers?

Real physical SIM cards from licensed mobile operators in EU, US, UK, Asian and LatAm countries. VoIP numbers from providers like Twilio and Google Voice are routinely blocked by WhatsApp, Telegram, Tinder, and most major services — VirtualSMS numbers pass those checks because they originate on real cellular networks.

How fast is delivery?

Most SMS arrive within 30-60 seconds of the service sending the verification code. If the SMS does not arrive within 20 minutes the activation is auto-refunded to your VirtualSMS balance — no dispute, no support ticket.

What payment methods are accepted?

Crypto via NOWPayments — USDT (TRC-20, ERC-20), BTC, ETH, LTC, BNB and more. No KYC, no phone number required from you. Card payments are intentionally not offered for privacy reasons.

How many countries and services are supported?

145+ countries with live SIM inventory and 2500+ services with per-country pricing. The supported list is published on the services page and country index, both kept in sync with live inventory.

Do I need an account?

No account is needed to view free shared numbers at /free-numbers. For dedicated private numbers — required for WhatsApp, Telegram, and any service that flags shared numbers — create a free account, top up with crypto, and start renting.

Is there an API for developers and AI agents?

Yes. Full REST API at /docs covering rent, activate, poll, cancel, and refund. AI agents can use the VirtualSMS MCP Server for one-install integration with Claude, Cursor, Codex, Windsurf, and other MCP-compatible clients.

Claude (Anthropic) Verification Number in United States

Get a real United States (+1) phone number for Claude (Anthropic) verification. Physical SIM card, not VoIP. Instant SMS delivery.

Published Mar 10, 2026·Updated May 31, 2026

Starting from

$0.75

One-time payment • No subscription

Live right now · United States Claude (Anthropic)

1,000

numbers in pool

under 90s

via Verizon mainline

Verizon, AT&T, T-Mobile US

tier-1 carriers

TL;DR

VirtualSMS provides Claude (Anthropic) verification via real United States mobile numbers (+1 prefix) — physical carrier-issued SIM cards, not VoIP. United States numbers from regional operators pass Claude (Anthropic)'s network-detection checks where Google Voice, TextNow, and MySudo get rejected as disposable. Numbers activate in under 30 seconds. Pricing from $0.75 per activation, paid in USDT, USDC, BTC, LTC, or SOL via NOWPayments. If the Claude (Anthropic) code doesn't arrive within 20 minutes, your balance is refunded automatically. Alternative to hero-sms, 5sim, SMSPool, SMS-Man, OnlineSim for United States Claude (Anthropic) verification — with real SIMs instead of shared VoIP pools.

How to Verify Claude (Anthropic) with a United States Number

📝

Create your VirtualSMS account in 30 seconds

💰

Add Balance

Deposit with crypto — fast and anonymous

📱

Select United States

Choose Claude (Anthropic) + United States and get your number

✅

Get Your Code

Enter the number in Claude (Anthropic), receive SMS instantly

Why VirtualSMS for Claude (Anthropic) in United States?

Real SIM Cards

Physical United States SIM cards from real carriers — not VoIP numbers that get rejected.

Instant SMS

Verification codes arrive within seconds. No delays, no missed messages.

Full Privacy

Pay with crypto. No personal info required. Your real number stays private.

Which United States carriers we run

United States Claude (Anthropic) activations come from a mix of tier-1 mobile networks and the MVNOs that diaspora communities lean on for cheap international rates. The pool rotates with stock — right now you're likely to get a SIM from Verizon, AT&T, T-Mobile US, Mint Mobile or one of the MVNO brands that ride those same networks: Metro by T-Mobile, Cricket Wireless, Visible, Boost Mobile, Spectrum Mobile, Xfinity Mobile, Google Fi, Total Wireless. All real mobile-network SIMs, not VoIP. Claude (Anthropic)'s anti-VoIP detection (the same check that rejects Google Voice and Twilio numbers) sees these as regular United States mobile lines because that's what they are.

All Claude (Anthropic) numbers

Claude (Anthropic) Numbers in Other Countries

Other Services in United States

Claude (Anthropic) verification with United States numbers — FAQ

Are these real US SIM cards or virtual numbers?

Real USA physical SIMs on actual carrier networks — Verizon, AT&T, T-Mobile US — plus popular MVNOs and cable-bundled carriers like Mint Mobile, Metro by T-Mobile, Cricket, Visible, Boost Mobile, Spectrum Mobile, Xfinity Mobile, Google Fi, and Total Wireless that ride on those same networks. They appear as a regular American mobile to any verifying service — not VoIP, not Twilio, not Google Voice.

Will USA numbers work for Google, WhatsApp, Tinder, and Discord verification?

Yes. US +1 mobile ranges have the highest trust scores globally and pass Google, WhatsApp, Tinder, Discord, Cash App, and US-region service verification reliably.

How long do USA numbers stay valid?

Rental window shown at checkout. Pay-per-SMS releases the number after the code. Long-term rentals (4h, 24h, 7d, 30d) stay yours for the full period.

Do you support major US carriers and MVNOs like Mint Mobile, Cricket, and Spectrum Mobile?

Yes. Inventory rotates across US networks — Verizon, AT&T, T-Mobile US — plus widely-used MVNOs and cable-bundled carriers (Mint Mobile, Metro by T-Mobile, Cricket Wireless, Visible, Boost Mobile, Spectrum Mobile, Xfinity Mobile, Google Fi, Total Wireless), depending on real-time stock. All real mobile-network SIMs.

Is KYC or ID required to use a USA number?

No KYC. Email + deposit + order. No SSN, no passport, no address verification.

What's your refund policy if a USA number doesn't receive SMS?

No-code, no-charge. Failed orders auto-refund to your VirtualSMS balance — typically before the timeout completes.

Are these real United States SIM cards for Claude (Anthropic)?

Yes — real physical United States SIM cards on actual carrier networks (+1), not VoIP. Claude (Anthropic) verification systems pass these consistently because they look identical to a regular United States mobile number to Claude (Anthropic)'s detection.

How fast does the SMS code arrive on a United States number for Claude (Anthropic)?

Most Claude (Anthropic) verification codes arrive in under 30 seconds on our United States numbers. If no code is received within 20 minutes, the order is automatically refunded to your VirtualSMS balance.

Claude (Anthropic) guides & insights

Receive SMS Verification in a Webhook: Real-SIM OTP Pipeline (Node, Python, Go) 2026

Receiving third-party OTP via webhook is not the same as Twilio Verify's outbound webhooks. Three runnable reference implementations in Node + TypeScript, Python + httpx, and Go with context.Context — plus HMAC verification, idempotency, and production hardening.

16 min read2026

How to Verify WhatsApp Without Phone Number (2026 Guide)

Verify WhatsApp without using your real phone number. Use virtual numbers from real SIM cards for privacy and multiple accounts.

6 min read2026

Build an AI Agent That Verifies Phone Numbers (LangChain / OpenAI / Claude)

Add SMS verification to your AI agent in any framework — LangChain, OpenAI Assistants, CrewAI, Claude tool-use. Real-SIM API, ~30-line setup, ~95% delivery.

11 min read2026

· About the authors ·

Written by

VirtualSMS Team

Real-SIM verification infrastructure · Operating since 2022

VirtualSMS operates its own physical SIM infrastructure for SMS verification across 145+ countries, including United States. Every pricing number, success rate, and country recommendation on this page comes from our live order logs for Claude (Anthropic) verification — not aggregator estimates, not scraped benchmarks. When Claude (Anthropic)'s anti-spam behavior shifts in United States or globally, the data here shifts with it.

Years operating

145+

Countries

2500+

Services

Published integrations

npm PyPI Packagist RubyGems NuGet MCP server

Get your Claude (Anthropic) number and verify in the next 3 minutes

Real physical United States SIM. Pay per SMS. Refund if code doesn't arrive within 20 minutes.