Sender ID registration in Saudi Arabia
What CST and the operators in Saudi Arabia require for SMS sender IDs, how long approval takes, the accepted formats and sending rules, and how OmniChannels.ai registers yours.
- Registration
- Required
- Typical lead time
- 5–10 business days
- Alphanumeric sender ID
- Yes
- Regulator
- CST
Short answer
Yes. Sender ID registration is required in Saudi Arabia (one ID per legal entity per use case; CST + operator approval). Approval typically takes 5–10 business days. Alphanumeric IDs of up to 11 characters are accepted. OmniChannels.ai handles the filing across 4 operators and confirms current rules during onboarding.
Sender ID rules in Saudi Arabia at a glance
| Regulator | Communications, Space and Technology Commission (CST) |
|---|---|
| Registration required | RequiredOne ID per legal entity per use case; CST + operator approval |
| Typical lead time | 5–10 business days |
| Alphanumeric sender ID | YesLatin or Arabic letters, up to 11 characters |
| Numeric long code / short code | Not listed for this market; alphanumeric is the documented format |
| Accepted formats | Alphanumeric (Latin or Arabic), up to 11 chars |
| Promotional senders | Operators register promotional senders with an -AD suffix (for example MyBrand-AD); transactional and OTP senders do not use it. We confirm the exact format during onboarding. |
| Promotional sending hours | 09:00–22:00 local time; during Ramadan 12:00–01:00CST's Regulations for Curbing SPAM Messages & Calls ban promotional messages from 22:00 to 09:00 daily, and from 01:00 to 12:00 during Ramadan. Transactional 24/7. |
| Opt-in | Verifiable opt-in required with PDPL-aligned consent capture. Source, timestamp, channel, and lawful-basis records retained for the life of the relationship. |
| Opt-out | STOP / ايقاف honoured network-wide. One-step opt-out, irreversible until the recipient re-consents. CST audits the audit trail. |
| Operators we reach | STC (Saudi Telecom Co.), Mobily (Etihad Etisalat), Zain KSA and Virgin Mobile KSA (MVNO · STC) |
| Last reviewed | 29 September 2026Sources: CST, CST SPAM regulations |
From BroadNet's regulatory research, last reviewed 29 September 2026. Rules change: we confirm them for your sender ID and traffic during onboarding.
Official sources: CST · CST SPAM regulations
How to register your sender ID in Saudi Arabia through OmniChannels.ai
Sender ID registration fees are passed through at cost. We confirm the documents and the current rules for your traffic during onboarding.
Need the authorization letter?
Generate a ready-to-sign LOA or NOC for this country in English, Arabic or both. Free, and your details never leave your browser.
Generate your authorization letter- 1
Choose and check your sender ID
Pick a sender ID that matches your brand: Latin or Arabic letters, up to 11 characters. Operators register promotional senders with an -AD suffix (for example MyBrand-AD); transactional and OTP senders do not use it. We confirm the exact format during onboarding. Test it in the free sender ID checker first.
- 2
Send us your company details and use case
Tell us the legal entity, brand and what each sender ID will send (OTP, transactional or promotional). Rules here allow one ID per legal entity per use case, so list each use case separately. We confirm which supporting documents are currently needed.
- 3
We file with CST and the operators
We prepare and submit the application. Current process in Saudi Arabia: One ID per legal entity per use case; CST + operator approval.
- 4
Approval and test messages
Approval typically takes 5–10 business days. Once approved we send test messages on STC (Saudi Telecom Co.), Mobily (Etihad Etisalat), Zain KSA and Virgin Mobile KSA (MVNO · STC) and check the sender ID displays correctly.
- 5
Go live
Send through the REST API, SMPP or campaigns. Promotional messages go out 09:00–22:00 local time; during Ramadan 12:00–01:00. Opt-out handling is applied to every promotional message.
Common reasons a sender ID is rejected in Saudi Arabia
- Too long: sender IDs here are up to 11 characters.
- Generic words instead of a brand, such as INFO, SMS, OTP, ALERT: regulators usually refuse them.
- Mixing scripts in one ID: Latin or Arabic letters are accepted, but pick one script per sender ID.
- Spaces or symbols such as _ & ! ( ): many operators strip or refuse them; use a hyphen or nothing.
- A promotional sender registered without the -AD suffix, or OTP traffic sent from a promotional sender.
- One sender ID shared across several companies or use cases: the rule is one ID per legal entity per use case.
Run your proposed sender ID through the free sender ID checker, preselected for Saudi Arabia, before you apply.
Register your sender ID in Saudi Arabia
Send us your brand and use case. We file the sender ID for 4 operators, run the test messages and connect it to the same API, SMPP and campaign tools you use for every other market.
Sender ID in Saudi Arabia: questions
Do I need to register a sender ID in Saudi Arabia?
Yes. One ID per legal entity per use case; CST + operator approval. We submit it for you and confirm the current requirements during onboarding.
How long does sender ID registration take in Saudi Arabia?
Typically 5–10 business days, depending on the operator and the documents provided. We confirm the current timeline for your sender ID during onboarding.
Can I use an alphanumeric sender ID in Saudi Arabia?
Yes. Alphanumeric sender IDs are accepted: Latin or Arabic letters, up to 11 characters. Accepted formats: Alphanumeric (Latin or Arabic), up to 11 chars.
When can I send promotional SMS in Saudi Arabia?
Promotional window: 09:00–22:00 local time; during Ramadan 12:00–01:00. CST's Regulations for Curbing SPAM Messages & Calls ban promotional messages from 22:00 to 09:00 daily, and from 01:00 to 12:00 during Ramadan. Transactional 24/7. Operators register promotional senders with an -AD suffix (for example MyBrand-AD); transactional and OTP senders do not use it. We confirm the exact format during onboarding.
What consent and opt-out rules apply in Saudi Arabia?
Verifiable opt-in required with PDPL-aligned consent capture. Source, timestamp, channel, and lawful-basis records retained for the life of the relationship. STOP / ايقاف honoured network-wide. One-step opt-out, irreversible until the recipient re-consents. CST audits the audit trail.
Who regulates SMS sender IDs in Saudi Arabia?
Communications, Space and Technology Commission (CST), together with the mobile operators (STC (Saudi Telecom Co.), Mobily (Etihad Etisalat), Zain KSA and Virgin Mobile KSA (MVNO · STC)). Official sources: CST, CST SPAM regulations.
Related for Saudi Arabia
Sender ID registration in nearby markets
- Algeria · 10–14 business days
- Bahrain · 5–7 business days
- Comoros · 10–14 business days
- Djibouti · 10–14 business days
- Egypt · 7–14 business days
- Iraq · 7–14 business days
- Jordan · 5–7 business days
- Kuwait · 5–7 business days
- All countries
Data: BroadNet regulatory research, reviewed 29 September 2026. URL: https://omnichannels.ai/sender-id/saudi-arabia/