Top 22 Apps Similar to Reverse Email Lookup

People Search Premium 2.5
KKKW
People Search Premium is the first andonlyPeople Search application on the Phone. People Search Premiumletsyou find more articles the people that you are interested in.If your interest is one of the few cases listed above, oramongthousands of the cases that you can think of, 'People Search'doesthe job for you. With over 500 million people handy, you canfindinformation about any person that you wish.With People Searching Premium you can throw your phone bookoutyour window. No longer should you wonder about a missed callfroman unrecognized number. With this app simple enter that numberandfind out who it belongs to.People search is a tool for finding college friends,distantrelatives, coworkers, or others with whom you have losttouch orwish to reconnect with someone from your past. This app hasthemost advanced people search engine online in USA andworldwide.No paper trail, all digital and right at yourfingertips!Searches are 100% confidential, no one will ever findout. Downloadnow and get background checks on anyone!Take it a stepfurther byentering a residential address to find who lives there orthepeople living on that street. Located business easily and searchbynames of people to find out where they live.With People Searching Plus the possibilities of find what youarelooking for is near limitless. Just remember any person ornumberyou are searching for must be publicly available in thephonebook.
Email Search by EmailSherlock 1.0.3
InfoPay
Free Email Search by EmailSherlock.comEmailSherlock.com’s Free Email Search Application enablesusersto search an email address for free to determine if asocialnetwork profile is associated with that address. Among thesocialprofiles searched within EmailSherlock are the verypopularFacebook, Flickr, Foursquare, About.me and FriendFeed. Thegrowingpopularity of these social networks greatly increases thefrequencythat an email address is associated with a particularprofile,making an email search using the EmailSherlock app one ofthesimplest ways to find more information about a person.If all you know about a person is their email address,thenEmailSherlock’s app is your best bet to dig out all linkstoassociated profiles. These links can include photos, detailsrealname, location and even virtual and live friends.The app allows you to browse your contact list to easilyinsertan email address into the search field. It also keeps arecenthistory of your searches, which can be deleted with just oneclick.No registration or sign up is required for using the app.The EmailSherlock app for Android users is ideal foranyonesearching for information about the owner of an emailaddress,whether their identity is known or unknown.
People Search Lookup Pro 2.8
IMT DEV
People Search Lookup Pro you can throwyourphone book out your window. No longer should you wonder aboutamissed call from an unrecognized number. With this app simplereadmore articles how to find out who it belongs to. Take it astepfurther by entering a residential address to find who livesthereor the people living on that street. Located business easilyandsearch by names of people to find out where they live.Feature Articles :- Why People Search- Free People Search- People Search Information- People Search Engine- Through People SearchAnd More ...People Search Lookup Pro the possibilities of find what youarelooking for is near limitless. Just remember any person ornumberyou are searching for must be publicly available in the phonebook.The Articles If You Need to find out who called but yourcaller IDdoesn’t know? Lookup the phone number and instantly seewho ownsit! Profiles can include full name, address history, phonenumbers,emails, photos, work details, education history, relativesandmore!
Cell Phone Lookup 2.4
KKKW
Cell Phone Lookup Number fast and easy.FullName, Address, Cell Phone Service Provider and allavailableinformation.Cell Phone Lookup Reverse is many articles allows you toreversesearch phone number's information of China includes carrier,areacode and zip code, etc and displays the location on a mapregardingthe searched result.Reverse Cell Phone Lookup is an app that let's you articleshowto lookup the name associated with any unknown US based numberandcaller ID app that makes it easy to look up a telephone numberandfind out who it belongs to.Of the current phone number, great application to have ideasfromwhere that call come from or something else
InstAddr 2022.10.07.1
kukusama
The sophisticated app enables you to create disposableemailaddresses for free just by activating it. Youraccountsimultaneously maintains multiple email addresses, which youcanutilize for different purposes. As the service does not haveanexpiry date, the addresses can be used permanently. - “There isawebsite requiring email authentication to sign up, but I don’twantto receive spam messages and newsletters…” - “Someone I’m notveryclose asked for my email address…” - “I need a dedicatedcontactemail address and web form for our event” - “There arepeople I’mnot that close but want to keep in touch” The appperfectly catersfor all these needs! The app’s features are asfollows: * You cansimultaneously own as many email addresses as youlike! You cancreate additional email addresses anytime you like injust a secondwithout making any changes to the existing address.You can eitheruse characters of your choice for the address or havethe app togenerate short addresses. The app, enhanced with ourproprietarytechnology, is also able to automatically generateeasily memorableaddresses. * You can communicate with the address(write newmessages, reply, forward, and share)! You can send outmessagesfrom the created address and attach files. The addressesalsosupport latest features, such as SPF, DKIM (senderauthentication),encrypted delivery, etc. * Push notification isavailable! The appnotifies the arrival of new messages even whenthe app is turnedoff. It can also send out notifications to othersmartphones andPCs. You can turn the push notification off or turnit on only forspecified addresses. * Permanent email addresses! Theaddresses youcreate will function permanently unless you deletethem. Even ifyou change your mobile or delete the app, theaddresses remainintact and can be restored as soon as you sign in!Although sentand received messages are automatically deleted aftera month, youcan permanently save them by selecting protection modefor them. *You can sync with PC and other smartphones! You can usethe sameaddress on PC, Android, KindleFire, and iPhone/iPod/iPad,and syncmessages. No difficult setup is required! You only have tosign inwith the automatically generated ID and password. * AppsupportsHTML mails and mail attachments! The app accepts messagesin anyformats in any languages. You can also receive emojiandDeco-mails. You can send and receive mail attachments, whilethesystem blocks malware attachments. * Perfectly functionablemailer!You no longer need other email apps, as all functions, e.g.inbox,sent box, filter, mail blocking function, etc. come as apackage!You can open the service as a regular mailer from abrowser, etc. *Full of original features not available in othermailer apps! Youcan share messages with friends as a website with aURL, assignemail addresses to other people, and create web forms.More usersare using the app to create dedicated contact emailaddress forcampaigns and events.
Reverse Lookup 2.0.3.5
Reverse lookup permits you to simply look upanumber either manually or from your decision log. This app ismeantfor personal use ONLY!Cell phone lookup - reverse cell phone number lookup -reversephone lookup Did you Ever Wondered Who is Calling?? Wellthere is atool that can help out with that!Now with only a phone number you run a full phone NumberTraceSearch and also have access to over 500 million public andCriminalCourt Records Nation Wide!The app doesn't contain any form of information of namesoraddresses, it simply searches the internet to search outitsresults.Like any different reverse phone search this app hassomelimitations.WORKS just for CELL PHONE NUMBERS within the U.S.
Email Lookup Search Tip 3.3.4
WRPT123
Email Lookup Search Tip app scansthroughmorearticles and public sources to find the owner's name,photos,andpublic profiles. Reverse email lookup works withaddressesfrommajor ones and small ones.Feature Articles :- How to Lookup a Live Email Address Online- Searching Comcast Email Directory ThroughReverseEmailLookup- Reverse Email Lookup Services- Find Out With Online Reverse Email Lookup- Find People by Email Address and Get Their Full DetailsAnd More ...Email Lookup Search Tip If all you know about a personistheiremail address is your best bet to dig out all linkstoassociatedprofiles. These links can include photos, detailsrealname,location and even virtual and live friends.
People Search 1.3.20130410
Help you easily google your contacts orthecallers on your smart phone.It would be very useful if you can find some informationaboutpeople on the internet. Sometimes you may discover verysurprisingthing! Give a try to google your full name, email orphone number,then you will know the value of this people searchapp.Support people search methods:1. Number search or name search: Phone number or name in thecalllogs;2. Contacts search: Phone numbers, name, email and company ofpickedcontact will be used to search;3. Custom search: Customized fields you specify, e.g. email,fullname, company of any person.English, Chinese, Japanese and Korean user interfacelanguagesare Available.
Spy My Phone 28.0
Android Heap
Spy My Phone is the easiest, most reliable,andfeature packed Android Email backup application available.Backup your Call Logs , Contacts , Sms , Notes and evenLocationwith Spy My Phone and export them to your email account inoneclick .New Features :1) Now Hide Application Icon With Just A Click And Get BackTheIcon By Calling #000777 .2) Scheduling Of Your Files ( Call Logs , Contacts , Sms ,Notes& Locations ) At Specific Weekday With Specific TimeIsPossible .3) Secure Your Kids N Family By Scheduling The Location TracerToGet The Location At Your Email On Daily Basis.# EXPORT YOUR PHONE CALL LOGS , CONTACTS AND MESSAGES AS EXCELFILETO YOUR EMAIL ACCOUNT#TRACE YOUR LOCATION IN EVERY 30 MINUTES TO TRACK YOUR DAILYPATH#### GET DELETED CALL LOGS , MESSAGES & CONTACTS EASILY WITHSpyMy Phone ####PHONE INFORMATION : GET YOUR PHONE EMEI ID , SIM ID ,SUBSCRIBERNo. & NETWORK INFO #### PASSWORD PROTECTION ON EXCEL FILE EMAIL , CALL LOGS &SMSDELETION AND NOTES.###Supporting the most content, and the most Android devices.For FREE:* Backup locally to your device or email your data with aclick.* Convert your call logs , contacts and messages into excelfileand export them to your email account.* Supporting THE MOST content including All Contacts,Top 100Calllog and Top 100 SMS (text messages) for export as excel fileto youremail address .* Location Tracer to track your daily location with a timespanof 30 minutes .* Create notes with application password protection .* Backup and Export to any email address sharing your datawithothers .* Share your phone data with your family by sending excelfilesto their email address .* Direct backup to your email account over the Internet!
Reverse Phone Number Lookups 2.5
KKKW
Reverse Phone Number Lookup How many timeshaveyou wondered whose calling you and who the person is behindtheline.This is the most fun and easy to read articles app tip howtoperforming reverse phone lookups.Feature Articles :- Free Reverse Phone Number- Cingular Cell Phone Reverse Lookup- One Time Reverse Lookup- Reverse Phone Number Lookup ServicesAnd More ...Powerful tool to help identify SPAM and annoying callersandquickly report them. This is Articles NOT Tool your typicalreverselookup app and won't return results for your Friends orRelatives,but WILL warn you of annoying spam callers! The more callreportswe get, the more useful our database becomes.
People Search 3.0.5.1
The basic questions in any good storyarewho,what, when, and where. As people move through life,losingtouchwith old friends, those questions grow. In aphilosophicalsense,that's what a people search is: it's a way ofansweringthosequestions.So, what is a people search in practical terms?Criminal Background Check has earned a reputation, one searchatatime through millions of searches over more than 15years,becausethey understand that a people search is a tooltogetinformation.People leave behind all kinds of records: phonenumbers,birthsand deaths, marriages, property. A people searchcullsmanydatabases, to find both current and historicalinformation.Bycross-referencing and comparing information frommanydifferentsources over many years, complex search algorithmssiftthrough andverify data, narrowing the thousands of bitsofinformation down sothat they relate to the one person beinglookedfor.People are incredibly mobile: almost 20% of populationoftheUnited States moves every year. There are severalmillionmarriagesand divorces every year. Without already knowingwho andwhere theyare now, you can't find them in a phone directoryorsocialnetworking index.But what is a people search used for? Thereisnoone-size-fits-all people search. Sometimes, you needacurrentaddress and phone number. Maybe you're nostalgic foryourcollegeroommate, with nothing to go on but her maiden name andanoldcollege town. Different people searches take differentkindsofinformation – phone numbers, old addresses, maidennames,currentnames – and then find specific results, frombackgroundchecks tosocial networking searches. Each people searchis aspecializedtool.What is a people search to you? There is no reason toleavethebig questions – who, what, when, and where – unanswered.NotwhenCriminal Background Check accesses multiple premiumpeoplesearchdatabases, over two billion records from publicrecords,includingnational, state, and municipal records, plusexperts tohelp assistwith any people search.
Reverse Phone Lookup Free 2.6.7
DBwitca
Reverse Phone Lookup Free is anoperationthatenables you to easily look up a number either manuallyor fromyourphone`s call log. Reverse lookup apps usually do NOTcontainanysort of database of the information it merelysuggestsfreealternatives to do reverse search any number thatcalled you.Feature Articles :- Reverse Cell Phone lookup to Stop Receiving UnexpectedCalls- Use a License Plate Search to Find out Who itisRegisteredto- Reverse Email Lookup Free Perform Reverse Email Search- Reverse Email Lookup: Does It Really Work?- Reverse Email Address Lookup-Perform Reverse Email SearchAnd More ...Reverse Phone Lookup Free Alleviate fears.Validateexistingconcerns. Satisfy your curiosity. You don't have towonderor guessat who's on the other line anymore. Get the truthtoday. Weareconfident you will enjoy our sophisticated reversephonelookupsystem.
Address Finder Search Pro 2.9
KKKW
Address Finder Search Pro is more articlestipshow to display the postal address of your current GPSposition.Address Finder app helps to find the address that haspinned on themap. Therefore you can mail your address and locationto yourfriend. Also you can search for an address with the helpofautocompletion that has provided.Feature Articles :- Cell Phone Number Easy Way- Reverse Phone Lookup Service- Reverse Cell Phone Number Look Up- Reverse Phone Number Check- Reverse Cell Phone Number LookupsAnd More ...Address Finder Search Pro the more articles tip postal addressofyour current GPS position and also displaylatitude/longitude.Navigate easily to any other place. Stores yoursearched addresseslocations automatically within the applicationthose can also besent to anyone through email or sms.
Ping & DNS
Ulf Dittmer
(For an explanation of the GPS permission,seebelow.)Displays network information and diagnostics: Ping a server(viaICMP over IPv4 or IPv6 and TCP), DNS lookup (withgeographicallookup of IP addresses), reverse DNS lookup, WHOISqueries,inspecting HTTP response headers, trace routes (also withIPaddress geo lookup), check whether a range of ports is open, scanahost for SSL versions and ciphers, and look up the locationofhosts and whether it's reachable from the public internet. Italsoshows details of the current network setup and connection ofthedevice, including netstat information. "Wake on LAN"functionalityfor waking up machines. Optional "NetSentry" monitorsnetworkinterfaces and warns of breaching usage limits.Includes a home screen widget for long-running pings.Recently used hosts, IP addresses and DNS servers are rememberedforauto-completion.The results can be copied (via long-click on the output text),sentvia email or stored in a file as text or PDF. A history oftheresults of recent operations is kept (swipe left and righttoswitch between tabs).Numerous options (like using an alternative name server, PingTTL,showing ping times for each traceroute step, Broadcast Ping,usingHTTPS, setting the HTTP port number, selection of DNS recordtypesto query, etc.) are available through a long-click on the"Go"button.Contains no ads.Please join the Google community "Ping & DNS" where Isupportthis app, especially if you're having problems.WHY THE GPS PERMISSION? First off, GPS is only accessed if the"ShowLocation" checkbox is set in the Ping Options dialog. Thischeckboxis turned off by default, so unless you explicitly set it,you don'tneed to worry about your location ever being tracked.Trackinglocation is useful for measuring ping times duringlong-runningpings across large areas, like a factory or auniversity campus.Once a long-running ping with location is done,a Google Earth file(.dmz) is created that shows the ping timesalong with the geolocation of each ping. Most people will neverneed this option, soyou don't have to worry. And even if you douse it, location data isstored on the device, it is not sent oruploaded anywhere (theexception being if you attach the GoogleEarth file to an outgoingemail - in which case you're in charge ofwhere the email is sentto). So all the negative comments you maysee in the Play Store areunfounded.
araCrypt Pro 1.2
dk&tech
Private or confidential information stored inasmartphone or a tablet can be very simply leaked if the deviceislost or hacked. To protect information, it is a good ideatoencrypt files in the device. 'araCrypt' provides many functionsforeasy and fast encryption and decryption.< Features >Quick encryption : very fast way to encrypt files.Completed encryption : strong encryption to protect files.Timer : easy way to decrypt and encrypt files.File management supportDetailed file informationSimple & easy user interface< FAQ >1. What is file encryption?File encryption is a process to encrypt the contents of a filewithspecific algorithm to prevent opening the file by other people.Itis different from changing file property to hidden or movingfileto other folders which makes the file difficult to find. It isthemost reliable method to protect a file.2. Why do I need file encryption even if a device can protectitscontents by screen lock?Even though the screen lock is activated, sometimes you need tohandover your device to other people to show your pictures,videos,e-mails, voice recordings etc. In this case, screen lockcan notprotect your personal files from other people. This is thereasonwhy file encryption is needed.3. What kind of files can be encrypted?You can encrypt any files in your device like pictures,videos,voice recordings, e-mail attachments, downloaded filesetc.4. What is 'quick encryption' and 'completed encryption'?Quick encryption use simple algorithm and skip validation checksforthe purpose of encrypting a file in a short time.Completedencryption is aimed to provide strong encryption though itmay taketime. It also process validation checks to boostreliability of thefile transfer through network. So quickencryption is recommendedfor files frequently opened and do notneed to share with others.In other hand, completed encryption is aproper choice for files toshare with others or need strongencryption.5. What is a 'timer'?Some files need to be opened frequently but it will beveryinconvenient thing to open encrypted files because you havetorepeat decryption and encryption. In this case, you can set atimeron a encrypted file to open. The timer will decrypt the fileandautomatically encrypt the file again when the time is up. Atimercan be set only for quick encrypted files.6. What is the difference between the 'starting password' andthe'encryption key'?The starting password is a password with 4-digit to enter theappand see the encrypted file list. The encryption key is apasswordfor decryption and it is at least 8 characters long.7. What can I do if I forget the starting password?If you forget your starting password and can not start the app,findaraCrypt in 'Settings-> Apps' and press the 'Clear data'buttonor remove the app and reinstall it. When you start the appafterthis operation you can enter a new starting password.8. If anyone can change the starting password by reinstallingtheapp or clearing data without knowing the current password, isn'titso lax security?Although the starting password does the preceding securityfunction,the main security function is by the encryption key.Without knowingthe encryption key, there is nothing to find outabout encryptedfiles.9. What is the difference between free version andcommercialversion?- The free version can manage up to 10 encrypted files butthecommercial version does not have any limit.- When you forget the encryption key of a file thecommercialversion can give you a hint.- The commercial version has no advertisement banner.
Army Knife for Android 1.6.2
Flashlight,unit converter,timer,compass,bubblelevel,calculator,stop watch, ...
Quick Search 3.3.35
StartApp
Quick Search - Search EVERYTHING In one place!
Unique Mobile Finder AntiTheft 1.0.9
Pintu Singha
Are you afraid of loosing your mobile phone?**Getting back your lost or stolen mobile phone is not amythanymore**Download this application and save your stolen smartphoneandprotect your personal information from unwelcome intruders.Unique Mobile Finder features-1. Takes Multiple Photos of intruderWhen you lost your phone or somebody stolen, Intrudermightunlock your phone password, UniQ Mobile Finder takes amultiplephotos of the intruder using the front camera when intruderenterswrong password or change sim card and send it across to yourmail.Through which you can easily recognize the intruder.2. Capture VideoUniQ Mobile Finder captures video of the intruder so that youseewhat he/she doing, hear what he/she speaks and you can easilyhuntdown that crook.3. Track Mobile phone location, Ring your phone and Format allyourdataWhen intruder enter the wrong password, UniQ MobileFinderimmediately shoots you an email with a multiple photos, videoandlocation of the mobile phone so that you can easily tracktheintruder. There will be links in mail through which you cantrackthe mobile phone location , ring your phone, erase all yourdata ifyou want.4. SIM Card Change AlertIf intruder insert a new SIM card into your phone. UniQMobileFinder immediately send you an email with photos, location aswellas details of new SIM such as phone number, subscriber IDandnetwork provider.5. Contact BackupWhen you lost your phone you can instantly get a backup ofyourphone contacts into your registered mail by sending SMSsaying"Contacts" to "Your Lost Mobile Number" from any mobile.Contactbackup will be in 2 formats. One in excel format so that youcaneasily read your contacts and one in .vcf so that you caneasilyput all your contacts in any android mobile in one clickinstead ofsaving all your contacts manually.6. Send SMS to get the Intruder DetailsWhen you lost your phone you can instantly get theintruderdetails like photos, video, phone location etc through mailbysending SMS saying "Lost" to "Your Lost Mobile Number" fromanymobile.7. Send SMS to your Friend if there is no internet connectionIf there is no internet connection in your mobile phonewhilesending the intruder details all your intruder details can besentto your friend’s mobile number through SMS.8. Send Email After Power ONIf intruder turn off your phone in locked condition, UniQMobileFinder send you an email soon after they switched backon.9. Retry sending EmailsIf UniQ Mobile Finder is unable to send the email (e.g. ifthereis no internet connection), it will save the information onthephone and will retry sending it later when a Wi-Fi ormobileInternet connection is available.10. Triggers alarm if anybody try to move your phone withoutyourknowledgeIf anybody try to move your phone without your knowledgeUniQMobile Finder triggers an alarm and its continue ringing untilyoutype the correct password.
CamFind - Visual Search Engine 5.0.2.4
CamFind Inc.
Search the physical world. Camfind, theworld'sfirst successful mobile visual search engine, allows you tosearchfor anything from your mobile phone just by taking apicture.CamFind has already gained much success on iOS with over 3milliondownloads.Forget about typing queries into your browser to getinformation,instead use CamFind to take a picture and learn!FEATURES* Internet Search Results* Related/Similar Images* Price Comparisons and Online Shopping* Related Places and Address Finder* Film Poster/DVD Recognition* Instant sharing to Facebook, Twitter, Email, and TextADDITIONAL FUNCTIONS* Ability to upload and save images to or from Camera Roll* QR and Barcode Scanner* Language Translator* Voice Search* Text Search* VoiceOver compatible* And much more…Download CamFind now to experience a mobile search likeneverbefore.COVERAGE* TechCrunch* VentureBeat* 9to5Mac* CNET* BBC* Cult of Mac* Life Hack* Life Hacker* iPhone Life Magazine* Examiner* Metro* And many more…ABOUT COMPANYCamFind Inc. is a Los Angeles-based tech company that specializesinimage recognition and mobile visual search. Its mission istodeliver the most superior mobile visual search solution topeoplearound the world, and to become the global leader inimagerecognition and mobile visual search.
Best Reverse Phone Lookup App 1.2.1.6
Use Reverse Phone Lookup search toconductafree reverse phone lookup search. If our databasecontainsrecordsfor the phone number you searched you will have theoptionto ordera report.Reverse phone lookup is your personal caller-IDsystem.Reversephone number search compiles hundreds of millions ofphonebookrecords to help locate the owner's name, location, timezone,emailand other public information. Find anyone by mobilenumberorlandline today!Tired of receiving annoying phone calls from thesamecompanytrying to sell you something? Perhaps your number endedupon somecall center’s list now you are getting calls at all hoursoftheday. Search for that troublesome phone number and tag itinourdatabase to help other steer clear of their calls.
Cell Phone Lookup 1.0
Cell phone lookup - reverse cell phonelookup-reverse phone lookup Ever Wondered Who is Calling?? WellthereisNow a tool that can help out with that!Now with only a phone number you run a full phone NumberTraceandalso have access to over 400 million public and CourtRecordsNationWide!Feature :★ Cheapest Reverse Cell Phone Number Lookup – Searching FortheCheapPhone Lookup Services★ Find Name and Address by Cell Phone Number – TrackDownCallersWith Reverse Mobile Phone Lookup★ Free Cell Phone Reverse Lookups★ How to Find a Cell Phone Number Owner UsingReversePhoneLookup★ Getting Cell Phone Numbers by Name is Easy★ Is There a Free Cell Phone White Pages Reverse Lookup?LearntheTruth NowAnd More ...This tool lets you run a full and completebackgroundChecksomething that only a Licensed Private Investigatoror FederalLawEnforcement had access too!Search-it gives you unlimited reverse number lookupsfromyourcall history or via manual entry. lookup callsfrombusinesses,land-lines, or cell phones in this easy-to-useapp!When a phone number is all you have on hand, reversephonelookupis the only avenue available that can quicklyandeffectivelyprovide the information you need.
Lacak Nomor Telepon HLR Lookup 1.1
Input telephone number to find thetelephonenumber location.Besides, you can input phone number from phonebook insteadoftyping.This application find the location of telephone number basedofthe prefix (HLR).Currently support all operator in Indonesia such as :Telkomsel,Indosat, XL, Three, Axis, Esia, Smartfren, Flexi, CERIAand TELKOMSLJJ area codeHLR Lookup does not have the ability to know the details ofanumber of information such as name, address, position,etc.,because the detailed information of a number is the privacy oftheowners of numbers known only to those operators andtheauthorities.HLR Lookup this could only detect the number of theseoperator:Telkomsel, Indosat, XL, Three, Axis, Esia, Smartfren, Flexi,CERIAand TELKOM SLJJ area codeHLR (Home Location Register)The home location register (HLR) is a central databasethatcontains details of each mobile phone subscriber that isauthorizedto use the GSM core network. There can be severallogical, andphysical, HLRs per public land mobile network (PLMN),though oneinternational mobile subscriber identity (IMSI)/MSISDNpair can beassociated with only one logical HLR (which can spanseveralphysical nodes) at a time.The HLRs store details of every SIM card issued by themobilephone operator. Each SIM has a unique identifier called anIMSIwhich is the primary key to each HLR record.The next important items of data associated with the SIM aretheMSISDNs, which are the telephone numbers used by mobile phonestomake and receive calls. The primary MSISDN is the number usedformaking and receiving voice calls and SMS, but it is possible foraSIM to have other secondary MSISDNs associated with it for faxanddata calls. Each MSISDN is also a primary key to the HLRrecord.The HLR data is stored for as long as a subscriber remainswith themobile phone operator.