Guaranteed to work for OpenAI Codex verification — if your number fails, you get a replacement or refund.
Why OpenAI Codex rejects your phone number
OpenAI checks every number against carrier databases before sending a code. If the number shows up as VoIP, landline, or Google Voice, verification is blocked instantly — you'll see "VoIP not supported" or the code simply never arrives. Free SMS inbox sites are even worse: their recycled numbers are blacklisted outright.
Codex is stricter than ChatGPT web. The Codex CLI forces an SMS verification step-up even on accounts that never needed one — and it permanently locks that number to your account. Use a disposable number and you may lose the account at the next re-verification.
The fix: a real US SIM number
This product gives you a real physical-SIM US number — the kind that shows line_type: mobile in carrier lookups, exactly what OpenAI accepts. Not VoIP. Not a recycled inbox. A genuine US mobile number with the highest OpenAI trust level.
How it works — verified in under a minute
- Buy. Pay $0.50 with your TokenLooT balance.
- Get your URL + activation code instantly after payment.
- Open the URL, enter the code — your real US number appears.
- Enter the number in Codex and request the OTP.
- Read the code as it arrives (seconds, not minutes) and complete verification.
Why 99% of cheap numbers fail — and ours don't
| TokenLooT real SIM | 5sim / SMS-MAN | Free SMS sites | |
|---|---|---|---|
| Number type | ✅ Real physical SIM | ⚠️ Often VoIP ranges | ❌ Recycled public |
| OpenAI line_type check | ✅ mobile | ⚠️ frequently flagged | ❌ blacklisted |
| Codex success rate | ✅ 99% | ⚠️ inconsistent | ❌ ~0% |
| Delivery speed | ✅ seconds | ⚠️ delays reported | — |
| Price | ✅ $0.50 | $1–$4+ | free (doesn't work) |
| Pay only on delivery | ✅ | ❌ | — |
Codex SMS vs the alternatives
Plenty of sites sell "OpenAI verification numbers" — but most hand you cheap VoIP or recycled shared numbers that Codex rejects. Here's how the options stack up.
| Provider | Number type | Codex success | Price |
|---|---|---|---|
| TokenLooT (this product) | Real physical SIM, US | 99% | $0.50 |
| 5sim | Shared virtual pool (reported mixed/VoIP ranges) | Reported inconsistent | From ~$1 |
| SMS-Activate | Virtual numbers | Varies by number batch | From ~$1.50 |
| TextVerified | Non-VoIP, US-based | High (with guarantee) | $1.80+ |
| Bitcall | Non-VoIP | Reported good | $0.50 |
Same job, one clear winner: a real SIM number at the lowest price on this list. ✅
Can I use this from Pakistan or India?
Yes. A US number carries the highest OpenAI trust regardless of where you are. Just avoid geo-mismatch red flags (e.g., don't combine it with a VPN exit in a third country during signup).
Need to keep the number longer?
Codex permanently binds the verification number to your account — and it can ask you to re-verify later. These are one-time verification numbers, so the honest move is this: keep your activation details safe, and if Codex ever asks for a fresh code, just buy a new one. It's $0.50 and instant — cheaper than any rental plan.
What buyers say
"Verified Codex on the first try — the code landed in under 10 seconds. Way easier than the VoIP numbers I burned money on before."
— Danish, developer
"Bought it for my Codex CLI setup. URL + activation code, number in my hands in a minute, OTP arrived instantly. Zero drama."
— Priya, AI tools freelancer
"I was stuck on the Codex phone step for two days with free SMS sites. This worked on the first attempt."
— Ahmed, student
Frequently asked questions
Will this work with Codex CLI login?
Yes — that's exactly what it's built for. The number passes Codex's SMS step-up with a 99% success rate.
Why do VoIP numbers fail OpenAI verification?
OpenAI queries carrier databases for each number's line type. VoIP, landline and Google Voice numbers are rejected before any SMS is sent. Only numbers showing line_type: mobile — like real physical SIMs — receive the code.
What if the code doesn't arrive?
You only pay when the SMS arrives. If no code comes, you can generate a new number — failed attempts cost you nothing.
Is the number reusable for re-verification?
Keep your activation details safe. Codex permanently binds the verification number to your account, so hold onto it in case Codex asks again.
How is this different from free SMS sites?
Free inbox numbers are recycled thousands of times and blacklisted by OpenAI — plus anyone can read your code. This is a private, real-SIM number used only by you.
Still stuck on the Codex phone step? Our guide walks through the full OpenAI Codex phone verification fix — including why VoIP numbers fail and how to avoid the common traps.
