Check the Mobile Numbers Registered to You and Escalate a Telecom Complaint (CST)
Two things worry residents about mobile lines: not knowing which numbers are registered to their ID, and a billing or service dispute the provider won’t fix. The Communications, Space and Technology Commission (CST) offers an online service for each. This guide uses CST’s own service pages to explain how they work and the deadlines that apply.
Quick answer
Use CST’s Inquire about my numbers service to see the phone numbers and data SIMs registered to an ID number. For a dispute, complain to your provider first, within 60 days of the invoice or incident. If it is closed without a solution, or 5 days pass with no resolution, escalate to CST within 180 days. CST’s escalation page lists its contact channels; check the contact details on the official website.
Key takeaways
- Numbers check: shows numbers and data SIMs registered to an ID or commercial registration number.
- Provider first: complaint within 60 days of the invoice or incident.
- Escalate when: the provider closes it without treatment, or 5 days pass unresolved.
- Escalation deadline: within 180 days.
- CST: contact channels are listed on CST’s escalation page, including info@cst.gov.sa.
Part 1: Check the numbers registered to your ID
CST describes the service as letting you inquire and view the details of phone numbers and data SIMs registered by national ID with telecom providers (CST).
Using “Inquire about my numbers”
1
Click “Start Service” on the CST page.
2
Follow the sign-in prompts shown by the service.
3
Enter the ID or commercial registration number.
4
Add a mobile number if you want to check one in particular (optional).
CST’s page speaks of a “national ID”. If you are a resident, check on the service screen whether your iqama number is accepted.
Why can’t I see all my numbers?
CST says only active and authenticated numbers are shown. If a number is active but needs authentication, contact the provider through its own channels to authenticate it, to avoid the service being cancelled.
Tip
If a number you don’t recognise appears, or a provider never processed a cancellation you requested, complain to the provider first. If it isn’t processed within five working days, CST says you can escalate.
Note
For help choosing a line when you arrive, see our mobile SIM guide for new residents.
Part 2: Escalate a telecom complaint
CST defines a complaint as a dispute between you and a provider in a licensed telecom service. The process has two stages (CST):
| Stage 1: your provider | Stage 2: CST escalation | |
|---|---|---|
| Where | The provider’s own complaint channels | CST’s “Telecom Complaints Escalation” service |
| Deadline | Within 60 days of the invoice or incident | Within 180 days of the provider closing the complaint or the 5-day period ending |
| Trigger | A dispute over a licensed telecom service | Closed without a solution, or 5 days passed unresolved |
What to have ready
- The complaint number from your provider
- The invoice, service contract or payment notices
- Any other documents that support your complaint
- If someone is filing for you, their authorisation as legal representative
Escalating to CST
1
Open “Telecom Complaints Escalation” on the CST site and click “Start Service”.
2
Fill in the service form: include your provider’s complaint details.
3
Attach your documents: invoices, contract or payment notices.
4
Submit the form and keep your reference.
If your provider won’t open a ticket
CST has a separate report for this. It lets you notify CST that a provider refused to open a complaint ticket: fill out the complaint form and send it (CST).
Warning
Keep every complaint number, date and reply in one place. The 60-day and 180-day windows run from specific dates, and missing them can cost you the right to escalate.
Contacting CST
CST’s escalation page explains how to contact CST, including its official social media channels, and lists info@cst.gov.sa as the email. Check the contact details on the official website.
Frequently asked questions
What does “Inquire about my numbers” show?
The phone numbers and data SIMs registered to the ID you enter, but only active and authenticated ones.
Can I go straight to CST?
No. CST says you must first lodge the complaint with your provider.
How long do I have to complain to my provider?
60 days from the invoice date or the incident.
When can I escalate?
After the provider closes it without treatment, or 5 days pass without a response, within 180 days.
Last checked: 22 October 2026 (Asia/Riyadh), re-reading the three CST service pages (deadlines, steps and the ticket-refusal report still match). Deadlines and forms can change; confirm on CST. Infosaudia is an independent guide and is not affiliated with CST or any government agency.
