Is this address
real?

Telemarketing calling hours by state

Federal rule everywhere: 8 AM – 9 PM in the called party's local time. These 22 states are stricter. Every other state follows the federal window.

Upcoming holiday call bans

Alabama, Louisiana, Pennsylvania, Rhode Island and Utah ban telemarketing calls on these days.

Questions

What hours can telemarketers legally call?

Federal TCPA rules allow telephone solicitations only between 8 a.m. and 9 p.m. in the called person's local time. Many states are stricter, with later starts, earlier cut-offs, Sunday bans or holiday bans. The stricter rule always wins.

Whose time zone counts: mine or theirs?

Theirs. A call center in New York dialing at 8:30 p.m. is fine for a Los Angeles number (5:30 p.m. there) but may be too late for a Florida number, where calls must end at 8 p.m.

How does the checker know the local time?

From the number's area code. Some area codes cover two time zones (for example parts of Florida, Texas, Kentucky and Tennessee). For those we check both zones and only say "OK" when it's allowed in both.

Is this legal advice?

No. It's a fast guide based on published state rules. Rules have exceptions and change over time, numbers can be ported to a different area, and governors can declare extra holidays. Check with counsel for your specific campaigns.

What the result means

Got a suspicious call?

• Don't press any keys or say "yes" if you answer a robocall. Just hang up.
• If the caller says they're your bank, a utility or a government office, hang up and call the number on your card or bill.
• Never give a code sent to your phone to someone who called you.
• Block the number on your phone and report it to your phone carrier.

Questions

Why would a real person's number be reported?

Scammers can fake caller ID and show any number, often one that looks local. The owner of that number never called you, but it still gets reported.

How recent are the reports?

We look at reports from the past year and show the first and last date a number was reported.

Is it safe to call back?

If the result is Possible or Likely spam, no. Calling back can confirm your number is active and lead to more calls.

Line types explained

Questions

Why might the carrier be wrong?

People can keep their number when they switch carriers. We show the carrier the number was first given to, so a number moved from, say, Verizon to T-Mobile still shows Verizon.

What does "Not a working number" mean?

The block that number belongs to hasn't been given to any carrier yet, so nobody can have that number.

Can I check if a number is still connected?

Not here. LineCheck checks whether a number is in use, and handles bulk lists and an API.

How it works

1. Every US number belongs to a range named by its first six digits (area code + prefix).
2. Each range is assigned to a rate center, the town where the phone company first issued it.
3. We match that town to Census data and list its ZIP codes and county.

Questions

Is this the owner's home ZIP code?

Not necessarily. It's the area where the number was first issued. People keep their numbers when they move or switch carriers, especially mobile numbers, so the owner may live somewhere else.

Why do I get several ZIP codes?

A phone prefix covers a whole town or rate area, not one street. Larger towns have many ZIP codes, so we list them all.

Why is no ZIP code shown for some numbers?

A small number of rate centers, mostly in US territories, have no Census ZIP data, so we show the area and state only. Numbers in unassigned ranges have no home area at all.

Is it accurate for landlines?

Landlines usually stay in the area they were issued in, so the estimate is most reliable for them. Mobile and VoIP numbers move with their owners.

What we check

• Format – missing @, spaces, double dots and other mistakes.
• Typos – common slips like gmial.com or hotmial.com, with the fix suggested.
• Mail servers – whether the domain can receive email at all, and who handles it.
• Throwaway inboxes – temporary email services people use to dodge sign-ups.
• Shared inboxes – addresses like info@ or sales@ that rarely reach one person.

Questions

Does "valid" mean the inbox exists?

It means nothing is wrong with the address and its domain can receive email. We don't contact the mailbox itself, so we can't promise a specific person reads it.

Why is a throwaway address risky?

Temporary inboxes stop working within hours or days, so anything you send later bounces and hurts your sender reputation.

What about addresses like info@ or sales@?

They're real inboxes, but shared by a team, so a message rarely reaches one decision-maker. We mark them risky for outreach.

Questions

What does the address check tell me?

Whether the address exists, its standardized form (the way the post office writes it), ZIP code, county, map coordinates, local time zone, and whether it's currently legal to make a telemarketing call there.

Can it fill in a missing ZIP code?

Yes. Enter the street, city and state and we return the full address with its ZIP code.

Why was my address not found?

Check the street number and spelling, and include the city and state or ZIP. Very new streets, PO boxes and some rural routes may not be listed yet.

How many addresses can I check?

One at a time, or lists of up to 1,000 addresses with a CSV download of the results. It's free.

Popular ZIP codes

Questions

Can a ZIP code cover more than one city or county?

Yes. Many ZIP codes cross city and county lines. We show the main city and county, and list the others it reaches into.

Can I find all ZIP codes in a city?

Yes. Type the city and state, like "Dallas, TX", and you'll get every ZIP code there.

Why does the time zone matter?

Sales calls are only allowed during set hours in the called person's local time, so the ZIP code tells you when you can call.

Area codes by state

See every US area code →

Questions

What is an overlay area code?

When a region runs out of numbers, a new area code is added for the same area. Both codes serve the same cities, which is why you must dial all 10 digits.

Which area codes are toll-free?

800, 833, 844, 855, 866, 877 and 888. They aren't tied to a place, so they don't have a local time.

Does an area code tell me where someone lives?

It tells you where the number was first given out. People keep their numbers when they move, so it's a good guess, not proof.