A2P SMS, OTP, and sender ID rules in Vietnam.
BroadNet delivers A2P SMS and OTP in Vietnam over direct connections to Viettel, Vinaphone, and Mobifone, with AIS sender ID registration in 7-14 business days. Direct termination into Viettel, Vinaphone, and Mobifone with government-aligned sender ID registration handled in-house.
From-rates by channel in Vietnam
- SMSfrom$0.0360per SMSIndicative list rate, reviewed September 24, 2026Volume pricing available
- OTPRequest a quote Channel list rate from $0.0120 per verification (all markets)
- WhatsAppRequest a quote Channel list rate from $0.0135 per template message (all markets)
- RCSRequest a quote Channel list rate from $0.0080 per session (all markets)
- VoiceRequest a quote Channel list rate from $0.0150 per minute (all markets)
Indicative list prices in USD, excluding taxes and sender-ID registration fees. Final per-operator pricing is confirmed in your quote.
The Vietnam A2P market at a glance.
Vietnam is served by 3 licensed mobile networks (Viettel, Vinaphone, and Mobifone) covering a subscriber base of 127M. Authority of Information Security (AIS) regulates A2P messaging and sender-ID registration. Brand names (sender IDs) for advertising SMS are issued through the national brand-name system run by the Authority of Information Security under Decree 91/2020/ND-CP; operators block names it has not issued. Vietnamese diacritics supported in UCS-2. Cybersecurity Law 2018 + Decree 13/2023 (Personal Data Protection) enforced. Data residency rules for some categories.
Technical facts for Vietnam
Network codes, message lengths and sender-ID rules in one table. Segment lengths are the GSM standard values (3GPP TS 23.038).
| Mobile country code (MCC) | 452 |
|---|---|
| Dialling code | +84 |
| Operators (MCC-MNC) |
|
| SMS length, GSM-7 (Latin alphabet) | 160 characters in a single SMS; 153 per part when concatenated |
| SMS length, UCS-2 (Arabic, Cyrillic and other scripts) | 70 characters in a single SMS; 67 per part when concatenated |
| Regulator | AIS (Authority of Information Security) |
| Sender-ID rules | Brand names (sender IDs) for advertising SMS are issued through the national brand-name system run by the Authority of Information Security under Decree 91/2020/ND-CP; operators block names it has not issued. Vietnamese diacritics supported in UCS-2. |
| Sender-ID lead time | 7-14 business days |
Channels live in Vietnam.
One contract, one contact model. Fall back between SMS, WhatsApp, and Voice with shared opt-in evidence and a single audit trail.
SMS
Operator-direct A2P with local-language script support where applicable.
OTP
Sub-4-second median; flash-call OTP available in select markets as a low-latency alternative.
WhatsApp Business API live. High consumer penetration across South and Southeast Asia.
RCS
RCS Business Messaging available on Google's MaaP where the carrier has enabled it.
Voice
Voice OTP and TTS available as fallback; recommended for high-fraud verticals.
How do I register a sender ID in Vietnam?
Filed end-to-end by BroadNet's compliance team — KYC pack, operator approval, and renewal cycles handled on your behalf.
AIS · Viettel and Vinaphone
- Format
- Up to 11 characters: Latin letters, digits, - _ . and space; not digits only
- Pre-registration
- Required — national brand-name system (Authority of Information Security, Decree 91/2020/ND-CP)
- KYC documents
- Confirmed during onboarding
- Renewal cycle
- Every 3 years (Decree 91/2020/ND-CP)
- Common rejection causes
- An incomplete dossier, a name already issued to another organisation, or a name that is all digits, too long, or misleading through Vietnamese homonyms or missing diacritics.
What OTP delivery looks like in Vietnam.
Latency profile, peak-hour behaviour, recommended fallback chain, and the fraud signals our firewall watches in-market.
Typical latency window
Median 3.2 s with a 95th-percentile inside 8 seconds across operator-direct binds. Two-shot delivery confirmed by DLR.
Peak-hour behaviour
Operator throughput holds steady through local business peaks; throttling kicks in only during outlier mass-send events. BroadNet load-shapes per-MNO to avoid firewall blocks.
Fallback chain
Recommended fallback: WhatsApp OTP → Voice OTP after 30s. Flash-call OTP is an option in markets where the carrier permits it.
Fraud signals we watch
Flash-call abuse, SIM-farm OTP harvesting, and template variance attacks are the dominant signals. BroadNet's anomaly engine watches per-MSISDN velocity.
What you can — and can't — send.
Opt-in, opt-out, quiet hours, content restrictions, and the penalty regime for the Vietnam market.
Opt-in
Verifiable opt-in required, with traffic categorised by use case at the time of registration. DLT-style template approval applies in several markets.
Opt-out
STOP keyword and DND-registry suppression applied automatically. Records retained per regulator requirements.
Quiet hours
Decree 91/2020/ND-CP allows advertising messages only between 07:00 and 22:00 each day. Transactional 24/7.
Content restrictions
Local-language templates preferred. Loan, gambling, crypto, and supplements blocked at the operator firewall.
Regulator penalties
AIS penalties for off-template, off-category, or grey-route traffic — fines, sender-ID delisting, and template re-registration required.
Termination,
network by network.
The route status column shows how each operator is reached — a direct BroadNet bind or a labelled partner route. No grey-route exposure. Route grades are indicative planning guides, not live measurements.
| Operator | MCC-MNC | Route status | Grade | A2P rate (typ.) |
|---|---|---|---|---|
| Viettel | 452-04 | Direct | A+ | USD 0.0405 |
| Vinaphone | 452-02 | Direct | A+ | USD 0.0383 |
| Mobifone | 452-01 | Direct | A | USD 0.036 |
Rates shown are typical pay-as-you-go for transactional traffic. Promotional traffic is priced separately, and volume tiers reduce both. See the rate-card section below for the full ladder.
| Tier | Transactional | Promotional | Notes |
|---|---|---|---|
| Pay-as-you-go | USD 0.0360 | USD 0.0439 | List rate up to 100K messages/month |
| Growth · 100K+ | USD 0.0317 | USD 0.0386 | Auto-tier discount |
| Volume · 1M+ | USD 0.0266 | USD 0.0325 | Includes quarterly route review |
| Enterprise | Custom | Custom | Direct operator pricing + signed SLA |
Government + operator sender ID registration: 7-14 business days.
Open the Vietnam rate cardCompliant
by default.
Every send is pre-screened against Authority of Information Security (AIS) rules, the operator firewalls, and the local privacy framework. Where registration is required, BroadNet files the paperwork on your behalf.
Cybersecurity Law 2018 + Decree 13/2023 (Personal Data Protection) enforced. Data residency rules for some categories.
Full regulatory deep-diveGovernment sender ID
Brand names issued through the national brand-name system (Decree 91/2020/ND-CP), valid for 3 years.
Decree 13/2023
Personal Data Protection Decree enforced.
Vietnamese UCS-2
Vietnamese diacritics supported.
Quiet hours 22-07
Promotional A2P restricted overnight.
Programmes that work well in Vietnam.
Where the BroadNet operator-direct footprint, the local regulator regime, and consumer messaging habits line up.
- 01
E-commerce OTP, order confirmation, and dispatch alerts at festival-season scale.
- 02
Fintech, lending, and digital-wallet OTP and KYC-step notifications.
- 03
Ride-hail, food-delivery, and logistics rider-and-rider coordination messages.
- 04
Travel and airline itinerary changes, check-in, and visa-status updates.
- 05
Government citizen-services notifications and public-sector campaign messaging.
What we run for Vietnam senders.
The operator relationships, the compliance workflow, the routing position — all on a single contract and a single account team.
Operator-direct binds with Viettel, Vinaphone, and Mobifone — no aggregator hops, no grey-route exposure.
Sender-ID requirements confirmed during onboarding.
Live in 8–19 business days from test-access request to production (set by the sender-ID lead time), with a dedicated solution engineer through go-live.
Typical delivery rate 99.0% and typical OTP delivery time 3.2 s across the country.
Template approval and DLT-style category management handled in-platform.
Local-language UCS-2 routing first-class — no transliteration penalty.
Buyer questions about Vietnam.
The questions BroadNet's sales engineers field every week from teams shipping into this market.
What's the typical sender-ID approval time with AIS in Vietnam?
Typical lead time: 7-14 business days. BroadNet confirms the current sender-ID requirements and documents during onboarding.
Are BroadNet's routes to Vietnam operator-direct?
Yes — every operator on the public coverage table is a direct A2P bind. No aggregator hops, no grey-route exposure. Route grades are indicative planning guides, not live measurements.
Can I send marketing SMS in Vietnam without prior consent?
No. Verifiable opt-in is required across every market BroadNet supports, with the consent source, timestamp, and channel logged. Transactional OTP and account-level alerts are exempt from marketing-consent rules.
Which channels do you support for Vietnam — SMS only, or also WhatsApp and Voice?
SMS, OTP, WhatsApp Business, and Voice OTP are all supported. RCS Business Messaging is available where the local operator has launched it. All channels run on the same contract and contact model.
Can I be billed in a currency other than USD?
Yes — billing is available in USD / VND. Volume tiers apply automatically from 100K messages a month.
Do I need a local-language version of my templates for Vietnam?
For consumer-facing transactional and marketing traffic, yes — a local-script template materially improves trust and recall. BroadNet handles UCS-2 routing without a price or SLA penalty.
What happens if a route to Vietnam degrades?
BroadNet runs continuous DLR monitoring on every operator. If a route flaps, traffic is automatically re-shaped to the next-best operator on the same destination, and your account manager is notified with a remediation note within the hour.
Do you sign an SLA for traffic to Vietnam?
Yes — traffic to this market runs under BroadNet's standard SLA: 99.99% monthly platform uptime, with service credits on enterprise contracts. Support response targets and the credit schedule are published on our Support & SLA page.
A ready-to-adapt template for Vietnam.
In the local script alongside English. Copy, swap the brand, and we'll register it as part of your sender-ID onboarding.
- Mobile subscribers
- 127M
- Sender ID lead
- 7-14 business days
- Time-to-launch
- Live in 8–19 business days from test-access request to production (set by the sender-ID lead time)
- Billed in
- USD / VND
Your code is 528914.
Mã xác minh của bạn là 528914.
Brand names (sender IDs) for advertising SMS are issued through the national brand-name system run by the Authority of Information Security under Decree 91/2020/ND-CP; operators block names it has not issued. Vietnamese diacritics supported in UCS-2.
Continue across the region.
See how enterprises put these operator-direct routes to work in banking and finance messaging and e-commerce and retail messaging, or weigh the options on the messaging platform comparison hub.
More on Vietnam
Request current route availability for Vietnam.
Live in 8–19 business days from test-access request to production (set by the sender-ID lead time). Sender ID filed with AIS on your behalf. Billed in USD from day one.
$ curl -X POST https://api.broadnet.me/sms/sendSms·mno = +84