6services
LINE number screening
The everyday messenger of Japan, Thailand and Taiwan, where accounts carry a public UID, nickname and avatar — the most visible identity layer of any app in this group.
Coverage
- Japan
- Thailand
- Taiwan
When phone networks went down after the 2011 Tōhoku earthquake in Japan, LINE spread fast and settled in as basic infrastructure. It then repeated the same path in Thailand and Taiwan, displacing local SMS and the earlier generation of messaging apps.
Platform characteristics
- Signup uses a phone number, but the public handle is a user-chosen LINE ID — and there's a separate toggle for whether the account can be found by phone number at all, so being registered and being findable are not the same thing.
- Nickname, avatar and status message are public by default, making this one of the few apps here where you actually get a face and a name back, so results can be spot-checked by hand.
- An account belongs to the country of the number it was registered with, and Japanese, Thai and Taiwanese user bases behave quite differently — lists are best handled region by region.
- Brands run LINE Official Accounts for support and broadcasts; in Japan and Thailand this is the mainstream outreach channel, occupying the place email marketing holds elsewhere.
What NexCheck detects
Items and unit prices come straight from the platform price list and stay in sync with it.
| Service | Standard | VIP |
|---|---|---|
| LINE Registration Screening (TW/JP/TH/KR/HK/US) | 0.000435 | 0.00029 |
| LINE Registration (UID+Nickname+Avatar) | 0.000551 | 0.000507 |
| LINE Activation (UID+Nickname) | 0.00087 | 0.000652 |
| LINE Mobile Active Screening | 0.00101 | 0.000725 |
| Fast LINE Comprehensive Screening | 0.00174 | 0.00138 |
| [Targeted] LINE Comprehensive Registration | 0.00116 | 0.00101 |
USD / record
What screening solves here
LINE screening returns more than a yes/no. It brings back the UID, nickname and avatar: the UID drops straight into a support or CRM system for follow-up, while nickname and avatar make manual spot-checking possible — something you simply cannot do on number-only platforms. Registration and activity must run in two stages: screen for registration first, then run activity against the accounts that came back registered.
FAQ
Does LINE screening return the UID, nickname and avatar?
Yes. There are combinations returning UID plus nickname plus avatar, and UID plus nickname alone. The express and targeted comprehensive lanes additionally return age and gender. Which one you pick depends on what happens next: UID plus nickname is enough for importing and grouping, while the avatar version is what you want if a human needs to verify the audience is right.
Should Japanese, Thai and Taiwanese LINE numbers be screened separately?
Better to separate them. A LINE account follows the country of the number it was registered with, and the registration check itself is organized by region — Taiwan, Japan, Thailand, Korea, Hong Kong, the US. User habits and profile completeness vary a lot between them, so mixing regions makes the results hard to compare and harder to judge which segment deserves more spend.
Why does LINE activity screening require a registration check first?
Activity is evaluated on accounts that already exist, so an unregistered number has no activity state to read. The flow is: run the registration check first to get the registered list, then submit that list for the activity check. Feeding a raw list straight into activity screening just spends processing volume on numbers that were never accounts.
Key markets
These markets list this platform as a primary entry point. Open a country for number formats and screening guidance.
Related platforms
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Submit numbers in the console after signup, or integrate in bulk through the API.
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