Latin America
SIP Trunk Argentina — +54 Termination & DID Numbers
Argentine mobile numbers are the classic source of misdialled traffic: locally they use a 15 prefix, but internationally you drop the 15 and insert a 9 after the country code. Get that conversion wrong in your dial plan and calls fail with 404 or 484.
Overview
Routing calls to Argentina
Calling windows matter: Argentina runs on Buenos Aires time, and we route +54 calls for Buenos Aires, Córdoba and Rosario, Mendoza, La Plata and Mar del Plata across several carriers so a peak-hour congestion event on one network does not take your campaign down.
Numbering in Argentina is managed by the national telecom regulator. We terminate to geographic, mobile and toll-free ranges and price each one separately on the rate sheet. Inside the country, numbers are dialled with a 0 trunk prefix. Strip it before you send the call, and send 54 followed by the national number.
Documentation for Argentina DIDs depends on the range. Some go live with standard account details, and others need a local address. Outbound calling has no extra requirements.
What you get
What you get in Argentina
One account and one balance, with the same SBCs for termination and inbound numbers.
CLI route tier
Caller ID delivered end to end on +54 calls. Use it for sales, support and any traffic where answer rates matter.Non-CLI route tier
A lower-cost tier where caller ID delivery is not guaranteed. Suitable for internal or transactional traffic that does not depend on the CLI.Number types
Geographic, Mobile, Toll-free. DID availability varies by range and city.Codecs
G.711a/u and G.729 on every route, G.722 and Opus where the far end supports them. T.38 for fax.Channels on demand
Concurrent call limits are set per account and raised as your traffic grows. No fixed channel bundles.Multi-carrier failover
Every +54 prefix is mapped to more than one carrier. Failed attempts move to the next one automatically.
Number formats
How to dial Argentina from your PBX
Send E.164 digits. The sample number below shows the format only.
| Format | Example | Notes |
|---|---|---|
| International (E.164) | +54 11 4123 4567 | How the number is written and stored. |
| Sent from your PBX | 541141234567 | E.164 digits with no plus, prefixed by your tech prefix if your account uses one. |
| With 00 exit code | 00 54 11 4123 4567 | Accepted on the trunk. We normalise it to E.164. |
| National format | 011 4123 4567 | Dialled inside Argentina. Strip the trunk prefix before sending. |
Compliance
Argentina rules to know
What applies before your first call or your first DID goes live.
Compliance box
- Regulator
- The national telecom regulator
- Caller ID
- A valid CLI that you are entitled to use is required on CLI routes. Spoofed or unallocated numbers are blocked.
- DID KYC
- Sometimes required
- Note
- International format for mobiles inserts 9 after +54 and drops the local 15 prefix.
Rules change — our team confirms current requirements before activation.
Use cases
Who uses Argentina routes
- 01
Spanish-language support desks in Buenos Aires serving the Southern Cone
- 02
Software and IT outsourcing firms with Córdoba and Rosario offices
- 03
Inbound 0800 numbers for nationwide customer service
Setup
Start calling Argentina in 3 steps
- 01
Top up $200
Open a prepaid account and add balance by USDT (TRC20), BTC or card. - 02
Add your trunk
Whitelist your PBX IP or create digest credentials, then point your outbound route at our SBC. - 03
Dial +54
Send 54 + national number in E.164 and check the CDR for your first test call.
Further reading: ASR and ACD Explained: How to Judge a VoIP Route
FAQ
Argentina SIP trunk questions
How do I dial an Argentine mobile from the trunk?
Send 54 9 + area code + subscriber number, without the local 15. For Buenos Aires: 54 9 11 followed by 8 digits.
Why do some Argentine calls return 484?
Usually the number was sent in local format (with 0 or 15) instead of international format. Normalise to E.164 before sending.
Can I get Buenos Aires DIDs?
Yes, numbers in the 11 area are available. Some ranges require a local address.
Who regulates telecoms in Argentina?
The national telecom regulator manages numbering and licensing. Our team confirms current requirements before activation.
