Phone list time zone sorter
Paste a call list. Get it split into Eastern, Central, Mountain, Pacific and the rest by area code, with a CSV for each zone, so every batch is dialed inside the 8am–9pm local window. Runs in your browser; nothing is uploaded.
How teams use the zone groups
- Load each zone's CSV into the dialer as its own campaign and open them east to west through the day.
- Hold Pacific, Alaska and Hawaii numbers until the afternoon in an Eastern office; hold Eastern numbers until mid-morning in a Pacific office.
- Split a shared list between reps in different offices by the zone they can call during their own working hours.
- Review the split-zone area codes (marked in each group) by hand if the batch is small enough to matter.
To see which numbers are inside the window at this moment rather than plan ahead, use the TCPA calling hours checker. State rules can be tighter than the federal window; the calling hours by state page lists them.
The right hour doesn't help if the number is dead
Sorting only reads the area code. A number can be in the Eastern batch and still be disconnected, a landline that cannot receive texts, or a VoIP line. Those only show up with a live carrier lookup.
Upload a CSV. Get back every number marked valid or dead, mobile, landline or VoIP, with carrier.
Start 3-day free trial →See the bulk phone number formatter, the duplicate lead remover, the free carrier lookup for a single number, or bulk phone number validation for the whole list.
Questions
How does the sorter know the time zone?
It reads the area code (the first three digits of a 10-digit US or Canadian number) and uses that area code's principal time zone. Area codes that cross a time zone line, such as 850 in Florida, are kept in their main zone and marked, so you can decide how to treat them.
Why sort a call list by time zone?
The FCC's TCPA rules (47 CFR 64.1200(c)(1)) and the FTC's Telemarketing Sales Rule bar telemarketing calls before 8 a.m. or after 9 p.m. at the called party's location. Splitting the list by zone lets a team start on Eastern numbers in the morning and move west, instead of checking each number as they go.
Is the area code where the person actually lives?
Not always. People keep cell phone numbers when they move, so a 212 number can belong to someone in California. The area code is a reasonable starting point for scheduling, not proof of location.
What ends up in the Unsorted group?
Toll-free numbers (800, 888, 877, 866, 855, 844, 833), numbers whose area code is not a known US or Canadian code, and lines that are not a 10-digit number after stripping formatting. They are listed with the reason so nothing silently disappears.
Are my numbers uploaded?
No. The sorter runs in your browser. Nothing you paste is sent to TrueSearch or stored, and the CSV downloads are built on your device.
Does this check whether the numbers work?
No. Sorting by zone only uses the area code. A number can be in the right zone and still be disconnected, a landline on an SMS list, or a VoIP line. That takes a live carrier lookup, which is what TrueSearch for Business does.
Does TrueSearch check the Do Not Call registry?
No. TrueSearch for Business checks whether numbers are valid and their line type and carrier. It does not scrub against the National Do Not Call Registry or litigator lists. Use donotcall.gov for that.
This guide is general information, not legal advice. TrueSearch for Business checks validity, line type and carrier from licensed telecom data. It does not check the National Do Not Call Registry, state DNC lists or the FCC Reassigned Numbers Database. Not a consumer reporting agency; not for FCRA purposes.