If you live in Saudi Arabia, every mobile number you own is registered against your Iqama. Other numbers can end up linked to the same Iqama too — an old SIM you forgot about, a number a shop registered incorrectly, or a SIM opened in your name without your knowledge.
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You can check sims registered on your iqama yourself, free, in a few minutes. The service most people still search for as CITC SIM check by iqama is now run by CST, the Communications, Space & Technology Commission, through its My Numbers service, also called Arqami.
This guide covers the check on the Mutasil portal, the CST app, and operator SMS codes — plus what to do if you find a number that is not yours.
Quick Summary
| Item | Details |
|---|---|
| Service name | My Numbers / Arqami — officially “Inquire about my numbers” |
| Provided by | CST (Communications, Space & Technology Commission), formerly CITC |
| Where | CST website (cst.gov.sa) → Inquire about my numbers, on Mutasil; also in the CST app |
| What you need | Iqama number, date of birth, and a mobile number registered to you (optional) |
| Login needed? | No login for the web form; Nafath sign-in is used in the CST app |
| Cost | Free |
| Result | All voice and data SIMs registered on your Iqama, across every operator |
| Unknown SIM? | Ask the operator to cancel it; escalate to CST if unresolved after 5 working days |
What Is the CITC SIM Check? CITC Is Now CST
The CITC SIM check lets citizens and residents see every phone number and data SIM registered under their national ID or Iqama with Saudi telecom providers.
The regulator behind it has changed its name. The Communications and Information Technology Commission (CITC) was renamed the Communications, Space & Technology Commission (CST). The service itself did not disappear — it is the same registry, now presented as My Numbers, or Arqami in Arabic, and listed on the CST website as “Inquire about my numbers.”
That is why searches are so mixed: people still type citc sim check, citc my numbers and citc sim check iqama number, while newer guides use cst sim check and cst my numbers for the same service.
One point older guides often blur: the web inquiry does not need an Absher or Nafath login. You complete it with your Iqama number and date of birth. Nafath, the National Single Sign-On, only comes in when you use the CST app or file a formal complaint.
Why You Should Check SIMs Registered on Your Iqama
A SIM registered on your Iqama is legally tied to you, whether you use it or not. An unknown number active in your name creates real risks:
- Fraud and misuse: an unknown number can be used for scam calls or accounts, and the trail leads back to your Iqama.
- Bills and charges: a postpaid line you never asked for can generate charges in your name.
- Blocked new connections: old forgotten SIMs can use up your allowance and stop you registering a new number.
- Exit and transfer problems: cleaning up records is far easier before a job change, Iqama transfer or final exit, not during it.
Check after you change employer, lose a phone or SIM, switch operator, or buy a SIM from a shop where your Iqama was copied. Repeat every few months.
Before You Start: What You Need
Have these ready before you open the service:
- Your Iqama number (citizens use their Saudi ID number the same way).
- Your date of birth, exactly as it appears on your Iqama, in the format the form shows on screen.
- One mobile number registered under your Iqama, if you have one. Optional — there is a no-mobile route below — but giving a number unlocks the full result.
- Never share the one-time code the service sends you with anyone who calls or messages you. CST and the operators will never ask for it.
Business owners can run the same check by choosing the business category and entering the Commercial Registration (CR) number instead of an Iqama.
Method 1: CITC SIM Check by Iqama on the Mutasil Portal
This is the main cst sim check iqama online method, and the one the official CST service page describes. Start from the CST website so you are on the genuine service, not a copy.
- Go to cst.gov.sa, open the services list, choose “Inquire about my numbers” (My Numbers / Arqami), then select Start Service. The inquiry opens on CST’s Mutasil platform.
- Choose your category: Individual.
- Enter your Iqama number in the Person ID field.
- Enter your date of birth as shown on your Iqama.
- Answer “Do you have a mobile number?” Choose Yes if you have a Saudi number registered to you, and type it in.
- Type the captcha code shown on screen.
- Select Inquire.
- If you entered a mobile number, an SMS verification code is sent to it. Enter the code to reveal your result.
What the result shows
After verification, the service lists the SIMs registered on your Iqama across all operators in one place — no need to check STC, Mobily and Zain one by one. For each registration you see the mobile number and its provider, covering voice numbers and data SIMs.
Two details matter. First, the list covers numbers that are active and authenticated to your ID. If a number is active but was never authenticated with your fingerprint, deal with the operator directly, because an unauthenticated number can be cancelled. Second, save a screenshot of your result — it is your evidence if you later complain about a number.
If you do not have a mobile number
Choose No at step 5 instead. You can still complete the check with just your Iqama number and date of birth, and this answers the basic question of how many sims on my iqama there are. The difference is what you see: instead of full numbers, you get a summary showing which providers have SIMs on your Iqama and how many. The numbers stay hidden, because there was no number to verify you by SMS. To see full numbers later, repeat the check with Yes and a number that belongs to you.
Method 2: Check in the CST App with Nafath
The same service is inside the official CST app for Android and iOS. Check the publisher is CST before installing.
- Install and open the CST app.
- Sign in with National Access (Nafath) and approve the request in your Nafath app.
- Open “Inquire about my numbers” / My Numbers and select Start Service.
- Confirm your ID and date of birth, complete the captcha, and select Inquire.
- Review the numbers registered on your Iqama.
Nafath here is only the sign-in proving who you are. There is no separate SIM list inside Nafath or Absher — the list always comes from CST’s My Numbers registry. Never type your Absher password into a third-party page promising a SIM lookup; start only from CST.
Method 3: Check by SMS with Your Operator
You can also ask a single operator how many of its SIMs are on your Iqama, by sending a free SMS from a SIM on that network. This checks one network at a time, so the Mutasil check above is still the complete picture.
| Operator | Send | To |
|---|---|---|
| STC | 9988 | 902 |
| Mobily | Blank SMS (empty message) | 616166 |
| Zain | Blank SMS (empty message) | 700123 |
The reply lists the numbers registered under your Iqama with that operator. Codes for smaller operators such as Virgin Mobile and Lebara are reported inconsistently in current guides, so check inside the operator’s app or ask its helpline (below) instead of risking a wrong code. If a code gets no reply, confirm the current code in the app before retrying.
How Many SIMs Can You Have on One Iqama?
Under the long-standing rule introduced by CITC, expatriates have been limited to two prepaid SIM cards on one Iqama, counting voice and data together across all networks, while Saudi citizens have been allowed up to ten prepaid SIMs. That two-SIM prepaid limit is why an old forgotten SIM can block a new registration.
Rules for postpaid lines and data-only SIMs are reported very inconsistently in older guides, and CST does not publish one simple current table for them. Treat any exact postpaid figure you read elsewhere with caution, and confirm your allowance with CST or your operator.
Found a SIM You Do Not Recognise? Do This
Do not ignore an unknown number. Work through these steps in order:
- Double-check it is really unknown. It may be an old SIM in a drawer, a data SIM in a router or tablet, or a work line your employer arranged.
- Contact the operator shown next to the number, ask it to investigate and cancel the number if it is not yours, and keep the reference number given.
- Re-run the check after the operator says cancellation is done, and confirm the number has disappeared. A request is not a completed cancellation.
- If the operator has not resolved it within five working days, escalate to CST through its telecom complaints service (Nafath sign-in) or call CST on 19966, with your reference number and screenshot ready.
Useful operator helplines:
| Operator | Helpline |
|---|---|
| STC | 900 (from other networks: 011 455 5555) |
| Mobily | 1100 (from other networks: 056 010 1100) |
| Zain | 959 (from other networks: 059 000 0959) |
| Virgin Mobile | 1789 |
| Lebara | 1755 |
| Friendi | 166000 |
| CST (regulator) | 19966 |
Never lend your Iqama for someone else to register a SIM, and never sell or pass on a SIM in your name. Until it is cancelled, its activity is your responsibility.
Common Problems and Fixes
| Problem | Likely cause and fix |
|---|---|
| No numbers shown | You used the No-mobile route — only provider counts show. Repeat with Yes and one of your numbers for full numbers. Or the SIM may be active but not authenticated; ask the operator. |
| Verification code never arrives | The number may not be registered to your Iqama, or SMS is delayed. Check the number, wait, request the code again. |
| Date of birth rejected | It does not match the Iqama record. Re-enter it exactly as printed on your Iqama, in the requested format. |
| Captcha keeps failing | Refresh for a fresh code and type it exactly, without spaces. |
| Service page not opening | Start again from cst.gov.sa rather than an old bookmark — links moved as CITC became CST. Retry later if the portal is under maintenance. |
| A cancelled SIM still appears | Cancellation may still be processing. Keep your reference, wait for the operator’s confirmation, then check again; escalate to CST if it remains. |
Frequently Asked Questions
Q: What is the CITC SIM check?
A: It is CST’s free My Numbers (Arqami) service, officially “Inquire about my numbers.” CST is the new name for the regulator formerly called CITC. Enter your ID and date of birth on the Mutasil platform and it shows every voice and data SIM registered under your Iqama or Saudi ID, across all providers.
Q: Can I check sims registered on my iqama without a mobile number?
A: Yes. Answer No when the form asks if you have a mobile number. You will see which providers hold SIMs on your Iqama and how many, but full numbers stay hidden. To see complete numbers, repeat the check with Yes and a number registered to you, and complete the SMS verification.
Q: Is the CST SIM check free?
A: Yes. The website inquiry, the CST app check and the operator SMS checks are all free, and the web result is instant. Do not pay a third-party site to check your registrations.
Q: Do I need Nafath or Absher to check my SIMs?
A: Not for the web inquiry — that needs only your Iqama number and date of birth. Nafath is the sign-in used in the CST app and when escalating a complaint to CST. There is no separate SIM list inside Absher; the numbers always come from CST’s registry.
Q: How many SIM cards can I have on my Iqama?
A: The long-standing prepaid limit for expatriates is two prepaid SIMs per Iqama across all networks, while citizens have been allowed up to ten. Postpaid and data-SIM allowances are reported inconsistently in older guides, so confirm your current allowance with CST or your operator.
Q: What should I do if a SIM on my Iqama is not mine?
A: Contact the operator shown in your result, ask it to investigate and cancel the number, and keep the reference number. Check again afterwards to confirm it is gone. If it is not resolved within five working days, escalate to CST via its complaints service or by calling 19966.
Q: Can I find someone’s Iqama number from their mobile number?
A: No. The check works one way only: you enter your own ID to see your own numbers. Operators are not permitted to reveal the Iqama number behind a mobile number, and you cannot view SIMs on another person’s Iqama, including a family member’s — they must run their own check.
Final Word
The CITC sim check by iqama — today CST’s My Numbers service — takes a few minutes, costs nothing, and is the only official way to see every SIM attached to your identity. Run the full check with your mobile number, screenshot the result, and act quickly on anything you do not recognise: operator first, CST after five working days if unfixed.