Clean a phone listin one paste.
Paste a column of phone numbers or open a CSV, pick a format, and get a clean list back: E.164 (+14155550132), (415) 555-0132, dashes or plain digits. Duplicates are removed, and numbers that cannot be dialed are listed with the reason, using the same checks a dialer runs. It all happens in your browser.
| Number | Location | Time zone | Note |
|---|---|---|---|
| +14155550132 | California | America/Los_Angeles | |
| +12125550198 | New York | America/New_York | |
| +13055550177 | Florida | America/New_York | |
| +18005550123 | Toll-free | — | Toll-free: a business line, not a person |
| 555-0101 | Wrong number of digits |
| (011) 555-0199 | Not a number the North American plan can route |
| John Smith 617 555 0143 | Contains letters |
US and Canadian numbers (the North American Numbering Plan). The checks are the ones DialerSeat runs before dialing: 10 digits, an area code and exchange that can't start with 0 or 1, no N11 service codes, no letters. Location comes from the area code, which shows where a number was issued; mobile numbers keep their area code when people move.
Questions people ask
What is E.164 format?
The international standard for phone numbers: a plus sign, the country code and the number, with no spaces or punctuation. A US number in E.164 is +1 followed by its 10 digits, like +14155550132.
Why is a number marked as impossible?
North American area codes and exchanges never start with 0 or 1, and N11 codes like 411 are service numbers. A number breaking those rules cannot ring a phone, whatever it looks like.
How do I remove duplicate phone numbers?
Leave "Remove duplicates" on. Numbers are compared after formatting, so (415) 555-0132 and 415.555.0132 count as the same number.
These are the checks DialerSeat runs before it dials. $35 a week per seat.
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