Free tool · no signup
Clean phone numbers before you message them.
Paste up to 25 numbers in any format. Get the E.164 version, the international format, the country and whether each one is a mobile, which is what decides if WhatsApp is even possible.
Paste numbers in any format. Each one comes back in E.164 with its country, type and a flag.
- 1.Paste numbers, one per line, in any format your list uses.
- 2.Pick a default country for numbers written without a +country code.
- 3.Use the E.164 version in your CRM and outreach tools.
What E.164 is, and why your tools want it
E.164 is the international phone number format: a plus sign, the country code and the number, with no spaces or punctuation (+447700900123). It is the one form every system agrees on, so a number stored that way dials, deduplicates and matches correctly everywhere.
Lists scraped or typed by hand mix every local habit: leading zeros, brackets, missing country codes. The same business can appear three times, and an SMS or WhatsApp tool may read a local number as belonging to the wrong country.
Valid is not the same as "on WhatsApp"
A number can be perfectly valid and still not be on WhatsApp, and a landline almost never is. This tool tells you if a number is real and whether it is a mobile. Confirming WhatsApp needs a check against WhatsApp itself, which Leads Ranger does for every lead before a message is sent, reading the number the way the business wrote it rather than guessing.
Do this automatically
Leads Ranger checks every lead’s number against WhatsApp before you message it, and never messages a stranger’s number by guesswork.
Straight answers
Questions, answered.
Start with +, add the country code, then the national number without its leading trunk zero, and remove spaces, dashes and brackets. A UK mobile written 07700 900123 becomes +447700900123; a US number written (512) 555-0147 becomes +15125550147.
No, and no honest web tool can without checking WhatsApp itself. It tells you whether a number is valid and whether it is a mobile, which rules out most numbers that cannot be on WhatsApp. Leads Ranger checks WhatsApp registration for your leads inside the app.
No. Formatting and validation run in your browser using the open-source libphonenumber rules. Nothing is sent to us.
Go deeper
Guides from the Ranger Playbook
Guide · 7 min read
WhatsApp Outreach for Lead Generation: The Channel Everyone Checks and Nobody Uses
WhatsApp messages see ~98% open rates while cold email fights for scraps. Here is how to run respectful, effective WhatsApp outreach for B2B and local business lead generation.
Read the guide→Guide · 8 min readWhatsApp Cold Outreach That Does Not Get Your Number Banned
Why WhatsApp bans business numbers, the habits that trigger it, and a practical way to reach businesses on WhatsApp: verified numbers, warm volumes, personal messages and an easy way to say no.
Read the guide→Guide · 8 min readWhatsApp for Business Outreach: The Rules Nobody Reads
When WhatsApp outreach is appropriate, what the platform policies and marketing laws require, the number-validation step people skip, and how to use it without getting your number blocked.
Read the guide→Free during the open pilot
Now find someone to send it to.
Leads Ranger finds local businesses with real emails, warms your mailboxes and runs the outreach. No credit card.
No credit card required
Free during the open pilot