--- title: "Sender ID registration in India" description: "Register an SMS sender ID in India: TRAI rules, 3–7 business days, DLT headers, sending hours, opt-out wording, alphanumeric formats and rejection reasons." canonical: "https://omnichannels.ai/sender-id/india/" language: "en" updated: "2026-10-11" publisher: "BroadNet Technologies" brand: "OmniChannels.ai" --- # Sender ID registration in India Canonical: https://omnichannels.ai/sender-id/india/ Language: en Publisher: OmniChannels.ai by BroadNet Technologies **Short answer:** Yes. Sender ID registration is required in India (header + every message template registered on DLT before send). Approval typically takes 3–7 business days. Alphanumeric IDs of 6 characters as the operators currently issue them (TRAI allows up to 11) are accepted. OmniChannels.ai handles the filing across 4 operators and confirms current rules during onboarding. ## Sender ID rules at a glance | Item | Details | |---|---| | Regulator | Telecom Regulatory Authority of India (TRAI) | | Registration required | Required (Header + every message template registered on DLT before send) | | Typical lead time | 3–7 business days (DLT header registration) | | Alphanumeric sender ID | Yes (Latin letters, 6 characters as the operators currently issue them (TRAI allows up to 11)) | | Numeric long code / short code | 6-digit numeric headers, for promotional traffic | | Accepted formats | Header registered on DLT; operators currently issue 6-character headers, letters for transactional and service traffic and digits for promotional (TRAI's definition allows up to 11 characters); the network appends -P, -S, -T or -G to show the category | | Promotional senders | Headers are registered on the DLT platform together with every message template; promotional headers are numeric, and the network appends -P, -S, -T or -G to show the category. | | Promotional sending hours | 10:00–21:00 local time (Under TCCCPR 2018 the time bands outside 10:00–21:00 IST are off by default for promotional traffic, and recipients can block further time bands. Transactional messages are not blocked by these preferences.) | | Opt-in | TRAI TCCCPR 2018 requires verifiable opt-in. DPDP Act 2023 adds explicit consent capture and data-subject rights on top. Consent source, timestamp, and channel logged per-recipient. | | Opt-out | Recipients block promotional messages, fully or by category, in the preference register (SMS or call 1909, USSD, IVRS, an approved app or an OTP-verified web portal), and operators add the details needed to revoke consent to every promotional message. Preferences and revoked consents are scrubbed on DLT before delivery. | | Operators we reach | Reliance Jio, Bharti Airtel, Vi (Vodafone Idea) and BSNL | | Last reviewed | 11 October 2026 (Sources: TRAI, TCCCPR 2018, consolidated with amendments (May 2026), TCCCPR (Second Amendment) Regulations 2025, VILPOWER DLT FAQ) | Official sources: [TRAI](https://www.trai.gov.in/), [TCCCPR 2018, consolidated with amendments (May 2026)](https://www.trai.gov.in/sites/default/files/2026-05/CA_21052026.pdf), [TCCCPR (Second Amendment) Regulations 2025](https://www.trai.gov.in/sites/default/files/2025-02/Regulation_12022025.pdf), [VILPOWER DLT FAQ](https://www.vilpower.in/faq/) ## How to register your sender ID in India through OmniChannels.ai 1. **Choose and check your sender ID:** Pick a sender ID that matches your brand: Latin letters, 6 characters as the operators currently issue them (TRAI allows up to 11). Headers are registered on the DLT platform together with every message template; promotional headers are numeric, and the network appends -P, -S, -T or -G to show the category. 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). We confirm which supporting documents are currently needed. 3. **We file your registration:** We prepare and submit the application. Current process in India: Header + every message template registered on DLT before send. 4. **Approval and test messages:** Approval typically takes 3–7 business days. Once approved we send test messages on Reliance Jio, Bharti Airtel, Vi (Vodafone Idea) and BSNL and check the sender ID displays correctly. 5. **Go live:** Send through the REST API, SMPP or campaigns. Promotional messages go out 10:00–21:00 local time. Opt-out handling is applied to every promotional message. ## Common reasons a sender ID is rejected in India - A header outside the operators' current 6-character format (letters for transactional and service, digits for promotional), or message templates not registered on DLT before sending. - Generic words instead of a brand, such as INFO, SMS, OTP, ALERT: regulators usually refuse them. - Arabic, accented or other non-Latin letters: this market lists Latin letters only. - Spaces or symbols such as _ & ! ( ): many operators strip or refuse them; use a hyphen or nothing. ## Sender ID in India: questions ### Do I need to register a sender ID in India? Yes. Header + every message template registered on DLT before send. We submit it for you and confirm the current requirements during onboarding. ### How long does sender ID registration take in India? Typically 3–7 business days (DLT header registration), 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 India? Yes. Alphanumeric sender IDs are accepted: Latin letters, 6 characters as the operators currently issue them (TRAI allows up to 11). Accepted formats: Header registered on DLT; operators currently issue 6-character headers, letters for transactional and service traffic and digits for promotional (TRAI's definition allows up to 11 characters); the network appends -P, -S, -T or -G to show the category. ### When can I send promotional SMS in India? Promotional window: 10:00–21:00 local time. Under TCCCPR 2018 the time bands outside 10:00–21:00 IST are off by default for promotional traffic, and recipients can block further time bands. Transactional messages are not blocked by these preferences. Headers are registered on the DLT platform together with every message template; promotional headers are numeric, and the network appends -P, -S, -T or -G to show the category. ### What consent and opt-out rules apply in India? TRAI TCCCPR 2018 requires verifiable opt-in. DPDP Act 2023 adds explicit consent capture and data-subject rights on top. Consent source, timestamp, and channel logged per-recipient. Recipients block promotional messages, fully or by category, in the preference register (SMS or call 1909, USSD, IVRS, an approved app or an OTP-verified web portal), and operators add the details needed to revoke consent to every promotional message. Preferences and revoked consents are scrubbed on DLT before delivery. ### Who regulates SMS sender IDs in India? Telecom Regulatory Authority of India (TRAI), together with the mobile operators (Reliance Jio, Bharti Airtel, Vi (Vodafone Idea) and BSNL). Official sources: TRAI, TCCCPR 2018, consolidated with amendments (May 2026), TCCCPR (Second Amendment) Regulations 2025, VILPOWER DLT FAQ. ### Can I send from a numeric number or short code in India? Yes. 6-digit numeric headers, for promotional traffic. Header registered on DLT; operators currently issue 6-character headers, letters for transactional and service traffic and digits for promotional (TRAI's definition allows up to 11 characters); the network appends -P, -S, -T or -G to show the category. ## Related - [Sender ID checker for India](https://omnichannels.ai/tools/sender-id-checker/?country=IN) - [SMS pricing in India](https://omnichannels.ai/sms-pricing/india/) - [Register your sender ID](https://omnichannels.ai/contact/) Last reviewed 2026-10-11. Rules are confirmed during onboarding.