· Editorial Team · technology  · 5 min read

How to Check SIM Numbers Registered on Your Iqama (CST)

Use CST's free "Inquire about my numbers" service: enter your iqama number and date of birth to see every SIM on your ID. Cancel unknown ones through the operator.

Use CST's free "Inquire about my numbers" service: enter your iqama number and date of birth to see every SIM on your ID. Cancel unknown ones through the operator.

To see how many SIM numbers are registered on your iqama, use the free “Inquire about my numbers” (Arqami) service from the Communications, Space and Technology Commission (CST). Enter your iqama number and date of birth, and it lists the numbers registered on your ID. If you see a number you don’t know, complain to that operator. If they don’t fix it in 5 working days, escalate to CST.

Last checked: November 2026.

CST is the telecom regulator (it was called CITC before). Its check covers the licensed mobile operators, so you don’t have to ask stc, Mobily, Zain and the others one by one. CST lists the service as free with an immediate result.

Why you should check

  • A SIM may have been registered with your iqama details without your knowledge. Any misuse of that number is linked to your ID.
  • Old numbers you stopped using may still be active.
  • Before final exit, it is wise to make sure no lines (and bills) are left in your name.

How to check the SIMs on your iqama

  1. Open the “Inquire about my numbers” service page on the CST website and press Start Service. It opens CST’s Mutasil platform.
  2. Choose the category of person making the query (individual).
  3. Enter your iqama number and your date of birth.
  4. Answer “Do you have a mobile number?”. If yes, enter one of your Saudi numbers.
  5. Type the captcha and press Inquire.

Two quick tips:

  • No Saudi number? CST says you can enter your ID number alone. You will then see which operators have subscriptions on your ID.
  • Have a Mutasil account? CST’s page says you can log in to Mutasil and see the numbers on your ID without using the inquiry form.

Understanding the result

What you seeWhat it meansWhat to do
Numbers you knowYour active linesNothing
A number you don’t knowA line registered on your ID without your knowledgeComplain to that operator (steps below)
An old number you already cancelledThe operator did not finish your cancellationComplain to the operator, then escalate
A number you use is missingCST shows only active and authenticated numbersContact the operator to authenticate it, or it may be cancelled
”Service stop order” messageYou can’t use the service for nowCall CST on 19966

How to remove a number you don’t recognise

CST does not cancel the line itself. The operator does. CST’s process is:

  1. Complain to the operator that owns the number (stc, Mobily, Zain, or the virtual operator shown) through its official customer care channels: app, website, store or call centre. Ask to cancel the line and say it was registered without your knowledge.
  2. Get a complaint (ticket) number. You need it if you escalate.
  3. Wait up to 5 working days. CST gives the operator this time to deal with it.
  4. Check again with “Inquire about my numbers” to confirm the line is gone.

Customer care numbers for each operator are in our Saudi SIM codes guide.

If the operator doesn’t fix it: escalate to CST

Use CST’s Telecom Complaints Escalation service when the operator closed your complaint without solving it, or 5 days passed with no fix.

  1. Open Telecom Complaints Escalation on the CST website and press Start Service.
  2. Log in with Nafath (see our Nafath login guide if you need help).
  3. Fill in the form with the operator and your complaint number, and attach any supporting papers (bills, contract, messages).
  4. Submit and follow it on Mutasil.

CST’s rules: it’s free; CST lists 30 days for processing; you must escalate within 180 days of the operator closing your complaint or the 5-day period ending. In general, complaints to an operator should be made within 60 days of the bill or of the incident.

If the operator refuses to open a complaint ticket at all, CST has a separate service for that: “Unable to open a complaint ticket in service provider portal” report.

Common problems and fixes

ProblemFix
Captcha keeps failingRefresh it, type slowly, and try another browser.
Date of birth not acceptedUse the date of birth exactly as it is on your iqama record.
Result shows a provider but no numberYou probably searched without a mobile number. Search again with one of your Saudi numbers to see full details.
My own number disappearedIt may need authentication. Visit or contact the operator to authenticate it with your iqama.
Operator says “the number isn’t ours”Run the check again and note the provider name it shows. Then complain to that provider.
Cannot log in for escalationEscalation needs Nafath. Fix your Nafath first.

FAQ

Is checking SIMs on my iqama free?

Yes. CST lists “Inquire about my numbers” with no fee and an immediate result.

Can I check without a Saudi mobile number?

Yes. CST says you can enter your ID number alone. You’ll see which operators have subscriptions on your ID.

Why isn’t one of my numbers in the list?

Only active and authenticated numbers are shown. Contact your operator to authenticate the line so it isn’t cancelled.

Can CST cancel an unknown number for me?

No. Complain to the operator first. CST steps in through an escalation if the operator doesn’t fix it within 5 working days or closes the complaint unsolved.

Should I check before leaving Saudi Arabia on final exit?

It is a good idea. Make sure only the lines you want are still active, and settle or cancel postpaid lines so nothing stays open on your ID.

What is CST’s phone number?

19966, or email [email protected].


Sources: CST, Inquire about my numbers; CST Mutasil, Arqami inquiry form and service FAQ; CST, Arqami launch announcement; CST, Telecom Complaints Escalation; CST, Service Level Agreement.

  • sim
  • iqama
  • cst
  • mutasil
  • arqami
  • mobile-number
  • telecom-complaint
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