Caller ID @ caller-id.co



phone image Caller-ID.co is the internet's first free caller ID service. If somebody called you and you're trying to find out who owns the number, you've come to the right place. You can immediately search our up-to-date database. Simply enter the number that called you, and we provide the name ("caller identification") registered to the phone number. Our service works for the entire United States and Canada, and we are adding more countries soon. Our caller identification is 100% reliable information directly received from our telephone company partner.

Caller ID Coverage for these phone prefixes:


331-200 Chicago IL
331-201 IL
331-202 Arlington Heights IL
331-203 Aurora IL
331-205 Chicago IL
331-206 Aurora IL
331-207 IL
331-208 Aurora IL
331-209 IL
331-210 IL
331-211 IL
331-212 Elk Grove Village IL
331-213 Hickory Hills IL
331-214 IL
331-215 Hickory Hills IL
331-216 IL
331-217 IL
331-220 Aurora IL
331-221 ELMHURST IL
331-222 IL
331-223 IL
331-224 IL
331-225 Arlington Heights IL
331-228 IL
331-229 Hickory Hills IL
331-240 IL
331-248 IL
331-250 Chicago IL
331-251 IL
331-256 Hickory Hills IL
331-262 Aurora IL
331-281 LISLE IL
331-301 IL
331-302 Hickory Hills IL
331-309 IL
331-311 IL
331-312 IL
331-330 IL
331-331 IL
331-332 IL
331-333 IL
331-411 IL
331-422 IL
331-425 Chicago IL
331-431 IL
331-442 IL
331-444 NAPERVILLE IL
331-452 Hickory Hills IL
331-454 IL
331-456 Chicago IL
331-457 Hickory Hills IL
331-462 IL
331-465 West Chicago IL
331-472 Chicago IL
331-481 IL
331-511 IL
331-551 IL
331-555 IL
331-575 Aurora IL
331-588 IL
331-591 IL
331-611 IL
331-618 IL
331-625 IL
331-630 IL
331-642 IL
331-643 Aurora IL
331-645 Arlington Heights IL
331-684 IL
331-700 IL
331-708 IL
331-711 IL
331-725 IL
331-773 IL
331-777 IL
331-779 IL
331-803 IL
331-811 IL
331-815 IL
331-825 IL
331-826 Arlington Heights IL
331-847 IL
331-872 IL
331-888 IL
331-911 IL
331-950 IL
331-958 IL
331-959 IL
331-976 IL
331-999 IL

About our free web caller ID service

phone image Caller ID goes by different names, such as CID, calling line identification (CLID), calling number delivery (CND), calling number identification (CNID) or calling line identification presentation (CLIP). It is a service provided by the telephone company, and works with older analog phone systems and most new voice over Internet Protocol (VoIP) systems. It simply transmits a caller's number to the called party's telephone equipment during the ringing signal, or when the call is being set up but before the call is answered. When available, caller ID also provides a name associated with the calling telephone number. The information made available to the called party may be displayed on a telephone's display, or a separately attached device. Until caller-id.co was developed, to view this information you needed a Caller ID receiver, a compatible phone, and a subscription to Caller ID service from your telephone operator. Some telephone operators charge as much as $10 per month for Caller ID. That's no longer necessary - you may now lookup the caller ID after the call by using our free service.

Caller ID is particularly useful to track down or limit the impact of tele-marketers, pranksters, and other nuisance callers.

History of Caller ID

In 1968, Theodore George “Ted” Paraskevakos, while working in Athens, Greece as a communications engineer for SITA, began developing a system to automatically identify a telephone caller to a call recipient. After several attempts and experiments, he developed the method in which the caller's number is transmitted to the called receiver's device. This method was the basis for modern-day Caller ID technology. You may learn more about the full history of caller ID on this wikipedia article.




Sitemap for 331 Caller ID directory

By proceeding with a Caller ID reverse phone number lookup, you agree to the Terms & Conditions of use for the Caller-ID.co website. Specifically, you attest that you are using this service only to find the Caller ID of a number that called your phone. You will not use the service to annoy, harass, or otherwise violate the privacy rights of the caller. You agree to use the service only for individual, non-commercial use, and to refrain from redistributing or publishing the callerid results. You indemnify callerid.co in the rare event any information returned is unavailable or inaccurate.

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