Some overseas numbers can be connected and some are simply empty. What should I do if they are mixed together?

Overseas numbers look like a series of numbers, but when actually put into outbound calls, text messages or social platforms, the status may be completely different. Some can be connected normally, some prompt that the number is empty, some cannot be connected temporarily, and some phones can be used but cannot be searched.WhatsApp or Telegram account.

These numbers are mixed up in the same file and contact is started directly, making it difficult to see where the problem lies. A safer way to deal with it is not toAll "unreachable" numbers will be deleted. Instead, the number format, communication status and platform registration status will be distinguished first, and then decide which ones to continue using.

First check whether the number is written correctly

Some numbers cannot be recognized, not necessarily because they are empty numbers, but also because the format does not comply with international number standards.

Overseas mobile phone numbers usually need to include the country code. For example, when dialing a Japanese number locally, it may end withStarting with "0", after converting to international format, the Japanese country code "81" needs to be used, and the local prefix must be processed according to the international numbering rules. Similar situations exist for numbers in the UK, Germany, Vietnam and other countries.

Common formatting issues in number files include:

lMissing country code;

lDuplicate country code;

lA local prefix that should not appear is still retained after the area code;

lThere are spaces, brackets or other symbols mixed in the number;

lExcel automatically changes the way long numbers are displayed;

lThe same number appears in multiple formats;

lCell phone numbers are mixed with landline numbers;

lNumbers from different countries are not marked with origin.

If the format is not sorted out, the detection system, customer service software and outbound call system may not be able to accurately identify it. appeared at this time"Failure" cannot be directly counted as an empty number.

The simpler method is to keep the original file first, and then make a copy of the working file for modification. The original number, organized international format, country, region and data source are retained separately. If an error in area code processing is discovered later, you can go back to the original record for verification.

Duplicate numbers lead to double counting of testing and follow-up costs

The same customer may come from advertising forms, customer service records, event registrations and historical orders. After merging data from different channels, duplicate numbers often appear.

If duplicates are not removed first, a number may be detected multiple times and may be contacted repeatedly by different customer service personnel. If the other party receives several similar messages, it is easy to think that they are batch promotions, and customer service may also mistakenly think that there are multiple customers in the list.

When removing duplicates, don't just look at the original writing of the number. For example, the same number, a record tape"+", the other does not have "+"; one uses the international area code, and the other retains the local format. If you only perform deduplication based on the exact same text, these records will still be treated as different numbers.

Therefore, it is best to remove duplicates after unifying the number format. Convert numbers from the same country into a consistent format first, and then look for duplicates, and the results will be more accurate.

Empty number, outage and temporary unavailability are not the same thing

"This number cannot be reached" is just the result, and the status behind it may be different.

Empty number

Usually it means that the number does not exist, has not been assigned, or has been recycled by the operator. Such numbers currently do not have a normal communication basis and are not suitable for continued investment in outbound calling and SMS resources.

shutdown

The number exists, but service is restricted. The reasons may be due to arrears, abnormal account status or active suspension by the user. Downtime is not necessarily a permanent loss, but the connection is of lower value in the short term.

Shut down or temporarily unavailable

It may be related to device shutdown, no signal, roaming status, network coverage or temporary failure. It is different from an empty number. Contact may return to normal at another time.

Landline or special number

Some of the data are not ordinary mobile phone numbers, but may belong to landline phone numbers, Internet phone numbers, virtual numbers or other types. Whether it is worth retaining depends on whether the business uses outbound calls, text messages, or social platforms.

Format error

When the system cannot recognize the number structure, it may also appear as a detection failure. In this case, you should first go back and check the country code and number length, and cannot delete them directly.

If all the above states are classified as"Invalid numbers" are easy to accidentally delete numbers that are temporarily unreachable but can be restored later. A more reasonable way is to save them separately, remove empty numbers from the current marketing list, keep temporarily abnormal numbers for review, and reorganize numbers with format errors before testing.

Just because the phone can be connected, it doesn't mean it's activated.WhatsApp

Number communication status and social account status are two different sets of judgments.

A mobile phone number can receive calls normally, but the owner of the number is not registeredWhatsApp, Telegram or LINE. Another number might be temporarily unavailable but still have a functioning social account.

So, doWhen WhatsApp acquires customers, it is not enough to simply check for empty numbers; when making outbound calls, it is impossible to determine whether the number can be connected by just checking whether WhatsApp is activated.

Testing should be arranged according to the actual contact channel:

lPrepare for phone calls, focusing on checking the basic status of the number and number type;

lWhen preparing to send text messages, you need to pay attention to whether the number can receive communications normally;

lready to useWhatsApp, continue to check whether the account is open and has been active recently;

lready to passTo contact Telegram, you need to confirm whether the mobile phone number is associated with the Telegram account;

lPreparing to develop markets such as Japan and Thailand needs to be confirmed based on business conditionsLINE usage status;

lFor local users in Vietnam, you may need to check whether the number is activatedZalo.

The same number can be contacted through multiple channels at the same time, but each channel must have a corresponding status basis.

Mixed lists can be processed in this order

Keep the original data first, don't delete directly on the unique file. Leave the number source, acquisition time, country and region, and existing customer records together so that the data quality can be judged later.

Then unify the number format. Check international area codes by country and region, remove redundant symbols, and handle obvious formatting errors. If the country number cannot be confirmed, save it separately first. Do not add the area code casually.

After the format is unified, duplicates will be removed. If the same number corresponds to multiple customer records, you can merge the sources and historical notes. Do not leave only one of them and lose the original communication information.

After finishing the basic arrangement, check the actual status of global numbers through Digital Planet. Based on current business needs, you can view empty numbers, operators, number types, device status or other basic information to separate obviously unusable numbers from temporarily abnormal numbers.

If you need to contact them on social platforms later, continue to check whether the corresponding account is opened. For example, prepare to useFor WhatsApp, determine which numbers have registered with WhatsApp from the numbers with normal basic status; when you need to further improve the efficiency of the first round of contact, refer to the account active, online or abnormal status.

Finally, the results are classified according to business purposes, rather than simply divided into"valid" and "invalid". The phone can be used, WhatsApp has been activated, Telegram has been activated, temporarily unavailable, needs to be reviewed and format errors should all be classified independently.

What will be the difference when processing 20,000 numbers at a time?

The following uses a set of calculation cases to illustrate the processing sequence. The data is only used to demonstrate the method and does not represent any fixed detection results.

The original file contains20,000 overseas numbers. After unifying the format, it was found that 1,400 records had obvious format problems. Some of them could be corrected according to the country and original records, and those that could not be confirmed were put on the to-be-checked list.

After the remaining data is deduplicated, it is reduced again2,100 duplicate records. At this time, the numbers that really need to enter the basic status detection are no longer 20,000, but about 16,500.

After basic testing, if there are anyThe 2,300 empty accounts, downtime, or other data that cannot be used normally should continue to be classified according to specific status rather than deleted entirely. The numbers that are truly suitable for social account detection will be further reduced.

If you don’t check the format or remove duplicates at the beginning, you will directlyAll 20,000 numbers are submitted for testing. Duplicate numbers and obviously erroneous data will also occupy processing resources. Mass messages will be sent directly after the detection is completed, and the same customer may receive multiple messages.

What this calculation really reflects is not"There will be as much left after sifting", but each layer processed in advance can reduce the amount of unnecessary data in the next layer. The actual ratio should be based on your own list source and test results.

Which numbers can continue to be used?

Numbers with correct format, normal number status, and matching the current contact channel can be entered into the priority list. need to passWhen contacting through WhatsApp, Telegram, LINE and other platforms, you must also confirm the status of the corresponding account.

Data that cannot be connected temporarily but the number still exists can be entered into the review list. Recheck it every once in a while to avoid permanent deletion due to a temporary exception.

There is a problem with the format but the data from the original source can be found, corrected and re-detected. If the country cannot be confirmed, the number length is obviously abnormal, and there is no record of other customer information, use can be suspended.

Empty numbers and data that have been confirmed to be unable to continue communication should be removed from the current sending and outbound call lists to avoid repeated charges.

Duplicate numbers require merging customer information. Keep different sources, historical consultations and communication notes to prevent valuable information from being deleted together during deduplication.

After the test is completed, a time record must be kept

The overseas number status will change. Numbers that are normal now may be shut down or recycled in the future; numbers that are currently unreachable may be restored later.

Each time a list is processed, it is a good idea to record the date of testing. Data that was detected as normal three months ago is not suitable to be used as the latest status all the time. In particular, numbers that were purchased earlier, come from complex sources, or have not been contacted for a long time need to be reviewed before reactivation.

The source of the number should also be kept. The quality of advertising forms, old customers, order records, and external data are different. When there are differences in subsequent response rates, you can go back and determine which channel has the greater problem.

When the format, basic status, platform registration status and detection time are all recorded, the number list is no longer a mess of numbers. Which ones are suitable for outbound calls and which ones can passYou can find a clear basis for WhatsApp contacts, which ones need to be reviewed, and which ones should be suspended.

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