Telecom & Privacy Tools
These tools help you check, format, and test numbers and messages before you use them. Choose the task you need: check a number, format a number, test with dummy data, or try a demo inbox. Each tool page explains what its result does and does not mean.
Check a number
SMS Carrier Lookup
Shows a number's country of origin, carrier network name, and mobile network code classification, as reported by the tool. Best for checking a number before you enter it in a sign-up form.
Limit: This is a classification from the tool, not a promise about how any service will treat that number.
Disposable & VoIP Detector
Checks whether a number belongs to a virtual VoIP pool or is backed by a physical carrier line, as classified by the tool. Best for understanding what type of number you are looking at before you rely on it.
Limit: The classification does not guarantee acceptance - some services treat number types differently in their own rules.
OTP Delay Checker
Shows simulated SMS latency and estimated delays. Best for understanding, in general terms, why a code can be slow to arrive.
Limit: Results are simulated estimates, not a measurement of delivery for your specific service, number, or network.
Country Calling Code Finder
Search any country or territory and copy its international dialing code. Best for entering a number in the correct international format, including the country code, before you request a code. Runs in your browser.
Format and count a message
Number Formatter
Parses a raw mobile number and converts it into standard international, national, and E.164 formats. Best for fixing a format problem before you submit a form - for example, a leading zero added after a country code, or a missing country code.
SMS Length Counter
Counts characters, SMS parts and encoding for a text message before you send it. Best for checking a message does not split or change encoding unexpectedly.
Test data - for software testing only
Random BIN Generator
Generates random bank identification number prefixes and dummy test cards that pass a checksum test. Best for software testing in a staging environment, where a test card number is needed and no real card may be used.
Limit: Test data only. Do not use it for a real purchase, a real account, or any attempt to pass as a real card.
Random Address Generator
Generates random, localized test address profiles for software testing. Best for testing a form that asks for an address, without entering a real person's details.
Limit: Test data only. Do not use it as a real identity, a real billing address, or a real person's record.
Email and demo inbox
Free Temporary Email
Generates a short-lived email inbox for email confirmations and email codes. Best for a sign-up that asks for an email code or confirmation link, where you do not want to use your real inbox.
Limit: Email only - it cannot receive SMS codes, and it is not suitable for password resets or accounts you need to recover later.
Free Numbers Demo Inbox
Shows how a shared phone number inbox looks, with example messages and notes on when to avoid one. Best for learning, before you use a real number, why a shared inbox is risky for accounts that matter.
Limit: This is a demo with example messages only. It is not a real inbox, and it must not be used for a real account.
Before you use a tool
These tools are for checking and testing. Do not enter a real account, a real card, or a real person's details into a test-data tool. A tool result is a classification or an estimate - it does not guarantee that any service will accept a number. Acceptance is decided by that service. Questions? Contact support at support@smsotps.com.
Link to our Free Tools
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