Complete solution to the US TG number format: country code + 1, area code and E.164 format instructions

In the scenario of overseas customer acquisition, US TG number (that is, the US mobile phone number registered with Telegram) is the target data that many promotion teams cannot avoid. However, when actually screening numbers, adding powder, and communicating, many people failed to detect and wasted costs due to incorrect number formats. This article breaks down the country code, area code and E.164 standard format one by one, and explains how to correctly generate and filter US TG numbers based on the format, making subsequent promotion more efficient.

What is the country code and area code of the US TG number?

Every US tg number contains three parts: Country Code + Area Code + User Number. Mastering their meaning and combination rules is the first step to screen effective users.

Basic rules for US country code +1

According to the North American Numbering Plan (NANP), the United States, Canada and some Caribbean countries share the country code +1. In the Telegram screening scenario, it must be clear:

• The country code must be written as +1. The plus sign cannot be omitted or replaced by 001.
• There should be no spaces or parentheses between the country code and subsequent numbers, just write them consecutively.
• The standard form of a complete US TG number is +1 + 3-digit area code + 7-digit user number, a total of 11 digits (excluding the plus sign).

For example: New York number sample format is +12125551234 (212 is the area code, 5551234 is the user number).

Several U.S. area codes commonly used to acquire customers overseas

Not all area codes are suitable for targeted promotions. Based on the geographical distribution, income characteristics and active periods of the target population, the following area codes are more common in overseas marketing:

Area code	Corresponding area	Common feature adaptation scenarios
212	Manhattan, New York	Business, finance, high-end consumer groups
310	Los Angeles/Beverly Hills	Entertainment, media, entrepreneurs
213	Downtown Los Angeles	Young, trendy, technology users
917	New York virtual number segment	Non-fixed area, can be used to cover the United States
415	San Francisco	Silicon Valley technology practitioners
305	Miami	Hispanics, tourism, e-commerce

Note: Area codes are portable, and some actual users of the 212 number may have moved out of Manhattan. When filtering, the area code should be regarded as the “initial registration geographical reference” rather than the current absolute location.

What is the E.164 format of US TG numbers?

E.164 is the global telephone number standard format established by the International Telecommunications Union. For US TG numbers, the format is:

+1  [区号]  [用户号码]

Key Rules:

• Must start with + (plus sign)
• Country code 1 (North America)
• Area code is 3 digits, the first digit cannot be 0 or 1
• User number 7 digits
• Does not contain spaces, brackets, dashes, or periods.

Correct example: +13105551234 (Los Angeles number) Error Example: 1-310-555-1234, 13105551234 (missing plus sign), +1 (310) 555-1234

In the KK-DATA screening platform, all numbers must be sorted into E.164 format before submission, otherwise the system will not be able to recognize them and the detection result will show “invalid number”.

How to generate a Telegram number with a US area code?

With the format specification in place, the next step is to obtain a sufficient number of US TG numbers for screening. KK-DATA provides the global number generation function, which can generate designated number segments based on area codes for free.

Generate by area code: from number segment to batch number

Operation path (take generating New York 212 area code number as an example):

1. Enter the console → app.kkdata.cc Select “Number Generation”
2. Select Country: United States (+1)
3. Enter area code: 212
4. Select Mode:
   • Randomly generated: The system automatically extracts numbers from segment 212, suitable for quickly obtaining bulk samples
   • Generate by number segment: Enter the first 4 digits of the office number (such as 555), and the system will generate consecutive numbers under the office number, suitable for testing specific levels
5. Set quantity: from a few hundred to about 1 million (depending on the quota)
6. Export: The generated number is output in E.164 format by default and can be directly used for screening numbers.

Custom import: How to organize existing numbers into E.164 format

If you already have a list of US numbers (collected from trade shows, purchased data, CRM exports, etc.), typically the source formats vary. Follow these steps to clean:

1. Open the column with Excel/Google Sheets and remove all non-numeric characters (spaces, brackets, dashes)
2. Check the number length: pure numbers should be 11 digits (1 + 3 digits for area code + 7 digits for user number)
3. Add the prefix + uniformly (for example, 1 → +1)
4. Optional: Remove duplicates (you can use the subsequent data deduplication warehouse function)
5. Save as CSV/TXT and import the screening task

US TG activation number detection: verification process and precautions

After submitting the sorted US number segments to the Telelgram number screening task, the system will detect “tg activation” (that is, whether to register) and return the following results:

• tg activated=yes: The number has been registered with Telegram, and the activity can be further detected
• tg activation = No: The number is not registered, no subsequent fees will be incurred (only the number of activated tests will be deducted)

Judgment logic: The system verifies the registration status of the number in Telegram by simulating a registration request, rather than sending a message to the user. All tests strictly abide by platform rules and do not interfere with users.

Export fields: The console supports exporting CSV/TXT, including mobile phone number, activation status, tgid (Telegram internal ID) and other information.

Filter active TG users in the United States: active window and age and gender data

Just knowing “activation” is not enough - for promotion teams that need to be reached by private messages, activity and crowd portraits are more important.

The practical significance of activity screening for overseas promotion

In the KK-DATA filter task, you can set up “tg active” detection and specify the active time window (such as online in the past 7 days, 30 days, and 90 days). Screening out recently active American TG users can greatly increase the message arrival rate and response rate.

Active window	Applicable scenarios	Suggestions
Past 7 days	Instant marketing and event notifications	High probability of users being online and quick response
Past 30 days	Standard promotion	Moderate crowd size, covering most active users
Past 90 days	Long-term maintenance	Contains some potential silent users, suitable for cultivation

Application of age field in tg data: How to target people around 30 years old

Telegram’s gender detection results include the “age” field (an interval value calculated by the system based on public information, and ID card-level accuracy is not guaranteed). Through this field, you can filter out people who are about 30 years old and assist in targeting by region + area code combination. For example:

• Filter criteria: Area code 310 + Age 28-35 + Open = Yes + Active for 30 days
• Applicable scenario: Promote SaaS tools to professionals in technology or creative industries in Los Angeles area

Note: The age field is an estimated interval, do not treat it as an exact number; it is recommended to be used as an auxiliary label rather than the only standard when used in batches.

3 key points to avoid formatting errors

1. Be sure to keep the plus sign: Don’t miss the “+” sign when submitting the number, otherwise the system will regard it as an 11-digit domestic number mode and the detection will fail.
2. Clean special characters: Use search and replace to remove spaces, brackets, dashes, and periods. It is recommended to use Excel’s =SUBSTITUTE(A1," ","") batch processing.
3. Do not repeat the country code: Some users write “1” again after “+1”, causing the number to become +111..., which is a redundant error. The country code only needs a 1.

Why do you need to generate a US area code number yourself?

Compared with purchasing a ready-made number list, generating your own has obvious advantages:

Dimensions	Generate by area code	Purchase ready-made list
Cost control	Free to generate, screen numbers are deducted per item	Usually paid per item/volume, may contain a large number of invalid numbers
Area code flexibility	Any area code or number segment can be specified	Unknown source, area code distribution uncontrollable
Data freshness	Different time window filter numbers can be generated on demand	The list may be backlogged, and the numbers have expired or been deactivated
Deduplication capability	Built-in deduplication warehouse to avoid repeated detection	Additional cleaning required

FAQ

**Q: Does the country code of the US TG number have to be written as +1? ** Answer: Yes. Telegram screen number detection requires numbers to be submitted strictly in E.164 format, which starts with “+1”. Omitting the + sign or writing it as 001 will cause the test to fail.

**Q: When I generated a US number, I only filled in the area code. How do I specify the specific number range? ** Answer: In the number generation module, you can choose the “number segment” mode: after specifying the area code, enter the first 4 digits of the office number, and the system can generate consecutive numbers under the office number. If you want it to be completely random, just select “Randomly generated”.

**Q: Do the area codes of US numbers (such as 212) correspond to all New York users? ** Answer: Traditionally, the 212 area code belongs to Manhattan, New York, but some numbers were transferred to other areas after the number portability policy. For the number screening scenario, the area code can still be used as a reference signal for the user’s initial registration area, but it does not represent the current actual location.

**Q: The generated US numbers are less than 10,000. Can I submit a screening number? ** Answer: Yes. KK-DATA supports a single task from a few hundred to about 1 million, meeting different needs from small batch testing to large-scale promotion.

**Q: The filtered results contain tgid and age data. How many times can these data be exported? ** Answer: There is no limit to the number of exports, the format supports CSV/TXT, and there is no additional charge.

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If you want to learn more about the generation and screening process of US TG numbers, please log in to the console to experience it. 👉Log in to the console to start screening numbers If you have any operational questions, you can contact customer service in both directions for real-time help: https://t.me/kkdata_robot For more usage documentation, please refer to: https://docs.kkdata.cc/