Area Codes generally Asked Questions

Who has actually authority end area codes?

The Federal communications Commission (FCC) has jurisdiction end telephone number administration in the joined States. Area codes perform not overcome state boundaries, so each state has the authority to decision when and in what form to introduce brand-new area codes. In, this government rests with the public Utility board of directors (

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who decides once a brand-new area code is needed?

The phibìc American numbering Plan administration (NANPA), right now administered by Neustar, studies historical growth, provides projections for future growth and notifies the when a brand-new area password is needed. The influenced area password is described as being near "exhaust."

NANPA administers the area code device designed in the 1940s by AT&T and also Bell Laboratories come route lengthy distance calls automatically. In 1947 obtained its very first four area codes: 214, 512, 713 and also 915.

NANPA is also the resource of all telephone numbers. It assigns the prefixes within any kind of area code to a telecommunications company.

What happens after NANPA notifies the a brand-new area password is needed?

NANPA holds a collection of meetings with representatives the the telecommunications industry, such as local and also long street companies and also related industries, such as emergency 911 systems, burglar alarms systems and portable call providers; and impacted local communities. The representatives take into consideration a variety of alternatives and comments, then forward a reference to the During an open up meeting, the can accept, disapprove or modify the NANPA recommendation.

can I comment on a proposed new area code?

Yes, the welcomes her comments. The will normally conduct one or much more public meetings in the an ar served by the area password nearing "exhaust" to explain obtainable options and also ask because that public comment. Friend can additionally send your created comments directly to the

that decides what the brand-new area code will be?

NANPA assigns new area codes for the whole nation. Shortly after receiving the decision on exactly how a brand-new area code will certainly be added, NANPA identify the new area code and also informs the, i m sorry announces it to the public.

However, return area codes might only appear to be just an inconvenience, they are also an indicator that positive economic growth.

Why are new area password needed?

Cell phones, fax machines, modems, alert systems and also pagers are among the well-known communications alternatives increasing the need for call numbers. Another culprit is the inefficient method telephone suppliers use to assign phone numbers. The system collection up through the telecommunications market calls because that number assignments in block of 10,000. This make sense as soon as telephone organization was a monopoly, yet in today’s competitive atmosphere the 10,000 block-assignment system has taken thousands of thousands of numbers out of circulation permanently.

Under the system, a scenario for your city could go choose this. NANPA obtain requests because that one or much more blocks of numbers from your existing company, two competitors, 4 wireless companies, and also three burglary alert companies. Each requests a block of number in one month. This request has actually just take away 100,000 numbers out of circulation, and also some companies have no instant need and may never require that plenty of numbers. Multiply together requests through the number of competing telecommunications companies and also the variety of population centers served by your area code and you have the right to see why this has come to be a problem.

How many numbers space in one area code?

Normal phone numbers are identified as NXX-XXXX (ie: 555-1234). N acts as any type of digit 2-9 and X is any kind of digit 0-9. Every area code has 792 prefixes or "NXX" codes. Every NXX has 10,000 feasible numbers. Therefore, theoretically, there room 7,920,000 telephone numbers per area code. In reality, since carriers require test numbers and also other codes, not every one of the telephone numbers are utilized.

What is the law to conserve numbers?

The was amongst the an initial state regulatory body in the nation to encourage rate center consolidation. Rate centers are the particular geographic locations used because that rating and billing lengthy distance calls, and every phone company serving a rate facility needs an personal assigned telephone prefix for its customers. In 1997 at the request of the, Southwestern Bell consolidated rate centers in Austin, Dallas, fort Worth, Houston and also San Antonio, freeing thousands that numbers.

In November, 2000 the started reclaiming numbers no in company under authority granted by the FCC. Reclamation functions this way. ~ NANPA assigns a prefix come a telecommunications company, the prefix should be in usage within six months. If not, the have the right to either bespeak the company to return the prefix and also its numbers to NANPA or the can provide the company a quick extension to lug the number in service. Thousands of numbers have currently been conserved in through number reclamation.

Number pooling, whereby NANPA assigns number to a telecommunications agency in blocks of 1,000 rather than the conventional 10,000, is one more conservation method. This an approach is being used in designated metropolitan areas in the state and is likewise saving numbers.

Sequential number assigning has been an additional helpful conservation tool. This type of assignment requires carriers to issue numbers in sequential order, hence preserving block in one thousands number increments for usage in number pooling.

What about local number portability? would certainly that help?

No. Number Portability doe not aid in conserving the numbers, a porting number provides two telephone number to path the speak to to the subscriber; one from the original switch and also the various other from the switch that serves the customer. Number portability is at this time an choice only when you readjust companies and is offered to encourage competition. Couple of customers would likely switch local companies if each switch forced a number change.

Some countries use eight-digit phone call numbers. Would certainly this cut down top top the require for brand-new area codes in through offering much more phone number combinations?

Although eight number phone numbers might solve the number shortage eventually, lock would call for revamping the nation’s telephone network. This type of change would be expensive come implement and the price would inevitably it is in passed on come customers.

If to move phones and also pagers are part of the problem, why not offer wireless technology its own area code? customers proposed this systems when new area password were an initial needed in Dallas and also Houston. The liked the idea, yet the FCC rejected it as anti-competitive. However, in in march 2002, the FCC reversed chin noting that circumstances have changed; therefore, the FCC is now considering Service certain Overlays ~ above a case-by-case basis and the is reviewing the possibility of using them.

What is the difference in between an "overlay" and also a "geographic split"? Geographic Split

geographic an ar covered through the area password is divided. One region keeps the currently area code. The other region or areas are assigned new area codes.


The area code offers a geographical identity, and also you store seven-digit dialing for regional calls.


It bring away time come alert friends and businesses that the new area code, and it prices money to reprint addresses top top checks, mail labels, business supplies and also advertising.


An overlay places a brand-new area password over the same geographic an ar or end a section of that an ar in what is referred to as a concentrated overlay. This creates two or an ext area password in the very same region. New customers room assigned the new code, if existing customers keep their present code.


You save your area code, and also you carry out not have actually to readjust advertising and also other published items.


You must dial 10 digits to location a neighborhood call, and a solitary residence or company could have two various area codes for different lines.

does an area code readjust affect long distance rates?

Absolutely not. Calls that were local before the readjust will remain regional calls. This is true even if friend have an extensive calling scope the is split by one area code. Friend may need to dial 10 number to reach particular cities in your regional calling scope, but it is tho a local call.

With an overlay, you have to remember to dial the area code along with your original seven-digit number, but you room charged as you were prior to the overlay. You room still make a regional call.

go a new area code impact my regional phone bill?

No, your phone bill remains the same.

room 9-1-1 calls affected?

No, the mechanism serving you will certainly be reprogrammed. You still dial only 9-1-1.

How deserve to I cope v all these brand-new area codes?

Make changes in your an individual and business attend to books because that anyone in an impacted area. If you have actually a statewide data base, upgrade it as soon as the brand-new area code have the right to be used, fairly than waiting till it need to be used. You should also reprogram numbers rate dialed to a brand-new area code.

Who have the right to I call if ns have an ext questions about a new area code?

Call your local phone company. If your questions are no answered, speak to the

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Cities and prefixes because that each area code have actually been provided by the north American number is numbered Plan administration (NANPA), which oversees the area password number assignment system. This details will change as brand-new prefixes are included or returned.

Prefix details will be updated periodically indigenous the NANPA database that prefixes in use in every area code. All prefixes listed on the Area Codes website reflect NANPA numbering data through June, 2009. Due to the fact that of the means telephone data is assembled, part cities might not be on the list. If girlfriend feel any city is not noted or is detailed incorrectly, please send the city, prefix, and also area code to areacode