Conduct telephone directory searches.  Find out addresses, telephone numbers.  Find out if a phone number is a cellular number.  Do reverse searches: find out who belongs to an address or phone number. Not just for private eyes!

Welcome to the home page of Spies Online, which contains a myriad of investigative resources for private investigators, including a PI Directory.  Whether you are a private detective or an amateur sleuth  looking to find someone or conduct a free people search, you will see why private eyes choose to use the investigative resources at Spies Online. Home  The Spies Online Forum is not just for private investigators.  Discuss investigative resources, private investigation, computer security and privacy, and legal issues. Forum  Send free electronic postcards here.  Our electronic postcards are not just for private investigators. Postcards  The Spies Online PI Directory from Spies Online has listings of private investigators worldwide. Spies Online PI Directory  Our e-mail discussion group is not just for private investigators.  We discuss private investigation, investigative resources, computer security and privacy, and legal issues. E-mail Discussion Group  Spies Online's PI Bookstore is not just for private eyes.  While we recommend books on private investigation, investigative resources and computer security and privacy, you are free to order any kind of books that you like. PI Bookstore  Shop Amazon Shop Amazon  Our FAQ/TOS and privacy policy should be reviewed before exploring the investigative resources on this site.  Private investigators and everyone: please read our rules before using this site. FAQ/TOS

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Spies Online contains a wealth of investigative resources for the private investigator and amateur sleuth alike.  For those who want to learn the art of private investigation, forget about software programs promising to turn you into an online spy. Spies Online will show you how to find someone and conduct a free people search, in some instances.
Looking for someone or something?  Spies Online has a wealth of investigative resources available for private investigators and amateur sleuths alike.

Telephone Searches and Tools

    This site offers some very useful searches and reverse searches.

  • AnyWho
    This directory service is provided by AT&T.

  • Bigfoot Directories
    Bigfoot Directories is a powerful tool that helps you find people, email addresses, and business profiles.

    From the site: "This tool dials a phone number and a computer voice reads off the text. The receiving phone number shows up as the CallerID field. You can set the time to any point in the future, or you can leave the time to now and it will call immediately."

  • Company And Telephone Directories
    RBA Information Services provides this nice worldwide directory compiled by Karen Blakeman.

    If you're tired of getting nothing but a computer when you make a phone call and really need to talk to a human, you'll love this database.

  • Grasshopper
    Turn your smartphone into a business line.

  • Infobel International Directory
    This directory has information and services for over 184 countries.

  • iNumbr
    iNumbr allows you to use your phone to communicate easily, safely and without revealing your number. iNumbr lets you manage how and when you can be contacted through your phone. You can easily block callers, set "Do Not Disturb" hours, and play a greeting to all callers BEFORE the call is connected. iNumbr gives you the power to decide what calls get through to you.

  • MelissaData's Find Info. About A Phone Number
    Enter a 10-digit phone number and find out the city, state, zip, time zone, county name and more. Enter a 7-digit number, and find out a list of possible area codes, cities and states. Enter a 6-digit area code and prefix and the location will be displayed. Enter a 3-digit area code for a list of the primary cities served by the area code. Enter a city name for a list of possible area codes and prefix combinations. Click here for even more interesting lookups.

  • (MS)ISDN Number Analysis
    Analyze any telphone number in the world, and learn the origin of the phone service! This utility is useful, for example, in pinpointing a location when you have a number but not an address. It provides the name of the city or town but not the street address of the owner. For best results, enter the number in international format (explained on the search page).

  • oh, don't forget...
    This service may be used to send yourself (or anyone) a reminder text message.

  • Payphone Project
    This is an online source for payphone information.

  • Phone Validator
    Here you may enter a phone number and find out if it is a cell phone or a landline. It also gives you information about the phone company and phone location.

  • Reverse Phone Directory
    You'll love this directory. Find out to whom a phone number belongs. Put in someone's street name, city, state and zip code and find out all of their nearby neighbors. Some of the other directories have these features, too, but the name of this site is so easy to remember!

  • Search Bug
    Use this telephone directory to search for people or companies by name, address or telephone number; there are also many other searches.

  • Searchbug's Landline Or Cellular Search
    From Searchbug: "Verify if a phone number is a cellular/mobile number or a landline number. The tool also reports telco carrier and location name/code. Works for US only. Enter Area Code and the first 3 digits (Prefix) of the number you would like to check."

    SENDaTEXT allows you to send free text and SMS from your computer or smartphone. All you need to use SENDaTEXT is a standard web browser and internet.

  • Skipsmasher
    Here's the place where pros get hard-to-find numbers and information.

  • Slydial
    This voice message service connects you directly to someone's mobile voicemail - great way to avoid awkward conversations.

  • Spoofcard
    This site offers caller ID spoofing and voice changing services. Be sure to check out applicable laws in your area before utilizing such a service.

  • Spooftel
    This site offers a service where you can call someone and make it look like you are calling from a different phone number. Be aware that there may be laws governing the use of such services, and you should find out what they are in your area.

  • Spydialer
    Reverse cell phone number lookup or landline number lookup. You're going to love this service.

  • SuperPages
    This free online directory service is provided by Verizon.

  • Switchboard
    Here's another digital directory.

  • Telespoof
    Here's another caller ID spoofing service that purports to allow "business professionals to remain anonymous when calling from anywhere in the world, to anywhere in the world." Again, be aware of applicable laws in your area before using such a service.

  • Trapcall
    Unmask unknown caller id.

  • Unlisted Phone Numbers
    For a fee, get them here.

  • WhitePages
    In spite of its name, this site provides free telephone directory searches for persons or businesses.

  • WhoWhere
    Lycos provides this source for free telephone directory searches.

  • Yellow Book
    Here's yet another source for free, online telephone directory searches.

  • YouMail
    This voicemail service for cellphones service for cell phones allows you to record unique voice greetings for anyone who calls you, based on their caller ID.


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