digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Business

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

Electronic serial numbers (ESNs) were created by the U.S. Federal Communications Commission (FCC) to uniquely identify mobile devices, from the days of AMPS in the United States starting in the early 1980s. The administrative role was taken over by the Telecommunications Industry Association in 1997 and is still maintained by them. ESNs are currently mainly used with CDMA phones (and were previously used by AMPS and TDMA phones), compared to International Mobile Equipment Identity (IMEI) numbers used by all GSM phones.[1]

The first 8 bits of the ESN was originally the manufacturer code, leaving 24 bits for the manufacturer to assign up to 16,777,215 codes to mobiles. To allow more than 256 manufacturers to be identified the manufacturer code was extended to 14 bits, leaving 18 bits for the manufacturer to assign up to 262,144 codes. Manufacturer code 0x80 is reserved from assignment and is used instead as an 8-bit prefix for pseudo-ESNs (pESN). The remaining 24 bits are the least significant bits of the SHA-1 hash of a mobile equipment identifier (MEID). Pseudo-ESNs are not guaranteed to be unique (the MEID is the unique identifier if the phone has a pseudo-ESN).

ESNs are often represented as either 11-digit decimal numbers or 8 digit hexadecimal numbers. For the decimal format the first three digits are the decimal representation of the first 8 bits (between 000 and 255 inclusive) and the next 8 digits are derived from the remaining 24 bits and will be between 00000000 and 16777215 inclusive. The decimal format of pseudo ESNs will therefore begin with 128. The decimal format separately displays 8 bit manufacturer codes in the first 3 digits, but 14 bit codes are not displayed as separate digits. The hexadecimal format displays an ESN as 8 digits and also does not separately display 14 bit manufacturer codes which occupy 3.5 hexadecimal digits.

As ESNs have essentially run out, a new serial number format, MEID, was created by 3GPP2 and was first implemented by Verizon in 2006. MEIDs are 56 bits long, the same length as the IMEI and, in fact, MEID was created to be a superset of IMEI. The main difference between MEID and IMEI is that the MEID allows hexadecimal digits while IMEI allows only decimal digits – "IMEI shall consist of decimal digits (0 through 9) only".[2]

The last of the previously unused ESN codes were allocated in November 2008.[3] Applications for assignments were accepted until June 30, 2010 using reclaimed ESN codes, those previously assigned to AMPS or TDMA phones and therefore not present on CDMA2000 systems. Reclaimed codes have also been used for UIMID assignments. Codes are assigned according to industry guidelines.[4]

Although ESN assignments may still occur in the future based on applications received before June 30, 2010, there have not been any assignments made since December 31, 2010.

References[edit]

External links[edit]


Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Electronic_serial_number — Please support Wikipedia.
This page uses Creative Commons Licensed content from Wikipedia. A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
84835 videos foundNext > 

https://youtube.com/devicesupport

Everything You Need To Know About ESN When Buying And Selling Phones

What you need to know about ESN (Electronic Serial Number). The reasons a phone will have a bad ESN, how to check if a phone has a clean or bad ESN. Like my Facebook page here ...

X-10 Operations: Using the Electronic Serial Number to Set the Operating Mode and Combination

Product page: http://www.kaba-mas.com/kaba-brand/products/553040/x-10.html If you have lost or forgotten the current combination, and the back cover is accessible, you can use the 8-digit...

What is a BAD ESN? What is an ESN? Where is the ESN?

In this video, we explain everything and anything you need to know about an ESN number. We provide you with the different types of serial numbers including ESN, MEID and IMEI numbers. We'll...

How-To Find A DMI-Accessible Electronic Serial Number

software program system usaha electronic handphone serial number

software program system usaha electronic handphone serial number call us (0877) 52655595 - (081) 259444676 http://www.mesinkasir.us - http://www.mesinkasir.web.id.

Check esn meid number on iPhone 4 Verizon

How to check esn meid number on iphone 4 If you would like me to review your phone accessories please contact me at scootinaloong@gmail.com Thank You! Please Like my page on Facebook: ...

Iphone 4s/4/5/5s Bad ESN Definition - Fliptroniks.com

Best Iphone 5/5s Cases: http://goo.gl/YTEX1A http://www.fliptroniks.com http://stores.ebay.com/Fliptroniks.

Altium Designer 14 Mac/Win [Free Download] Crack and Serial number

The new Altium Designer 14.1.5.3 extends the company's leadership position in native 3D PCB Design systems by delivering a new customer centric platform with heavy emphasis on core PCB design.

UFED TOUCH - Faster, Smarter, Easier Mobile Forensics

Cellebrite is proud to present UFED TOUCH - a high performance solution for high performance devices. Cellebrite's UFED Touch sets a new standard for mobile forensics, advancing Cellebrite's...

84835 videos foundNext > 

181 news items

 
GlobeNewswire (press release)
Thu, 23 Apr 2015 05:22:30 -0700

Q Inside Safety Technology, which acts as an electronic serial number within implanted medical devices, is currently being used within Establishment Labs' ("EL") Motiva Implant Matrix® breast implants. Q Inside Safety Technology enables physicians and ...
 
Military Technologies
Thu, 16 Apr 2015 05:56:08 -0700

Q Inside Safety Technology, which acts as an electronic serial number within implanted medical devices, is currently being used within EL's Motiva Implant Matrix® breast implants. Q Inside Safety Technology enables physicians and patients to access a ...
 
CNNMoney
Mon, 13 Apr 2015 05:22:30 -0700

Q Inside Safety Technology™ acts as an electronic serial number within implanted medical devices, and enables physicians and patients to access a secure, online database to retrieve implant-specific data, such as serial number, manufacturer name, date ...

Bankrate.com

Bankrate.com
Thu, 02 Apr 2015 03:30:00 -0700

Once you receive your phone, check its electronic serial number (ESN), mobile equipment identifier (MEID) or international mobile equipment identity (IMEI) number to make sure the phone isn't locked. Find your phone's number in the settings menu or ...

New York Times

New York Times
Wed, 25 Feb 2015 11:38:35 -0800

That process includes checking the phone's electronic serial number, or ESN, against online databases to see whether a phone has been blacklisted — if it has been reported stolen, for example — what carriers it is compatible with and its price range.

Charlotte Observer

Charlotte Observer
Sat, 22 Nov 2014 15:48:17 -0800

She said the orders compel mobile carriers to provide CMPD with the electronic serial number assigned to each phone. Police can learn a suspect's general location because the orders require carriers to tell officers which cellphone tower is receiving ...
 
Tampabay.com
Sun, 08 Mar 2015 17:45:00 -0700

That process includes checking the phone's electronic serial number, or ESN, against online databases to see whether a phone has been blacklisted — if it has been reported stolen, for example — what carriers it is compatible with and its price range.
 
National Retail Federation (press release)
Mon, 09 Mar 2015 10:39:16 -0700

For the manufacturer and the retailer it's an electronic serial number or stock keeping unit, and potentially a network address for any item related information. We have long since expected RFID to replace price tags and shipping labels with a single ...
Loading

Oops, we seem to be having trouble contacting Twitter

Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!

Searchlight Group

Digplanet also receives support from Searchlight Group. Visit Searchlight