Bulgaria
Name

Bulgaria

ISO Code

BG

Region

Europe

Mobile Country Code

284

Dialing code

+359

Major carriers

A1, Telenor, VIVACOM

Guidelines for Bulgaria
Two-way SMS supported

No

Number portability available

Yes

Twilio concatenated message support

Yes

Message length

No

Twilio MMS support

Converted to SMS with embedded URL

Sending SMS to landline numbers

SMS cannot be sent to landline destination number. The Twilio REST API will throw a 400 response with error code 21614, the message will not appear in the logs and the account will not be charged.

Best practices

Twilio strongly encourages customers to review proposed use cases with qualified legal counsel to make sure that they comply with all applicable laws. The following are some general best practices:

  1. Get opt-in consent from each end user before sending any communication to them, particular for marketing or other non-essential communications.
  2. Only communicate during an end user's daytime hours unless it is urgent.
  3. SMS campaigns should support HELP/STOP messages, and similar messages, in the end user's local language.
  4. Do not contact end users on do-not-call or do-not-disturb registries.
Phone Numbers and Sender ID
Preregistered
Operator network capability

Not Supported

Twilio supported

Not Supported

Sender ID format

--

Sender ID preserved

Not Supported

Two-way support

Not Supported

Provisioning time

--

Cost
--
Throughput (messages per second)
--
Use case restrictions
--
Best practices
--
Alphanumeric
Operator network capability

Yes (except M-tel)

Twilio supported

Supported

Sender ID format
--
Sender ID preserved

Yes ( except M-tel)

Two-way support

Not Supported

Provisioning time
--
Cost

$0

Throughput (messages per second)

10 messages/second

Use case restrictions
--
Best practices

Vivacom is fully featured Mobiltel sender ID is replaced with a numeric value to ensure delivery. Telenor numeric sender IDs will be replaced with ‘SMS’ in order to ensure delivery.

Long Code
Operator network capability

Not Supported

Twilio supported

Not Supported

Sender ID format

--

Sender ID preserved

No

Two-way support

No

Provisioning time

--

Cost

--

Throughput (messages per second)

--

Use case restrictions

--

Best practices

--

Short Code
Operator network capability
--
Twilio supported

Not Supported

Sender ID format
--
Sender ID preserved

No

Two-way support

No

Provisioning time
--
Cost
--
Throughput (messages per second)
--
Use case restrictions
--
Best practices
--
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