Msafer 2026: Check Registered Lines During App Suspension

You can check telecommunications lines registered in your name on the Msafer website. Log in with a joint or financial authentication certificate, then select the Subscription Status Inquiry Service. Website inquiries remain available while linked app services are suspended.

The suspension and resumption schedule is based on the notice dated October 28, 2026.

How to Use the Msafer Subscription Status Inquiry Service

Log in with a certificate in your name to check activated telecommunications lines. The login page supports joint authentication certificates and financial authentication certificates. No separate account registration is required.

1. Have a joint authentication certificate or financial authentication certificate in your name ready.
2. Open “Identity Theft Prevention Service” on the official website. Select “Subscription Status Inquiry Service.”
3. Read and agree to the mandatory terms on the login page.
4. Verify your identity using your certificate.
5. Compare the listed lines against the contracts you actually use. For any unfamiliar line, ask the relevant carrier how it was registered.

The official entry page is the Subscription Status Inquiry Service. The inquiry covers lines activated in your name as of the inquiry date. It does not check for personal data leaks.

There is no separate deadline for submitting an inquiry. The website FAQ states that the inquiry service operates 24 hours a day. However, maintenance may interrupt access, so check the notices as well.

PASS and KakaoBank Suspension Schedule

KT PASS, LGU+ PASS, and KakaoBank have different suspension start times. The affected features are subscription status inquiries and subscription restrictions within the apps. The schedule below follows the notice of temporary suspension on linked platforms.

The app features are scheduled to resume on November 20, 2026, at 9 a.m. (South Korea) This is not a deadline for submitting an inquiry. If the features will not open in the app, use the website.

The Difference Between Subscription Status Inquiries and Subscription Restrictions

An inquiry checks lines that have already been activated. Subscription restrictions block future mobile phone activations. The service introduction explains the two features separately.

Simply checking your inquiry results does not enable subscription restrictions. To block additional activations, check your settings in the Subscription Restriction Service. You may need to lift the restriction to activate a mobile phone yourself.

What Changes Starting November 20, 2026

According to the notice, the Subscription Restriction Service will be provided by default when activating a new mobile service. The effective date is November 20, 2026. The notice of temporary suspension on linked platforms states:

Starting November 20, the Subscription Restriction Service will be provided by default when activating a new mobile service.

This wording applies “when activating a new mobile service.” It does not state that the service will automatically apply to all lines held by existing users on the same day. Check your current settings directly in the Subscription Restriction Service.

What to Do If You Find an Unfamiliar Line

For an unfamiliar line, ask the relevant carrier how it was registered. If you suspect identity theft, request immediate suspension of the service. The guidance on handling suspected identity theft also requires setting a password to prevent the suspension from being lifted.

1. Contact the carrier shown in the inquiry results to confirm whether the line was activated.
2. If identity theft is suspected or confirmed, request immediate suspension of the service. Be sure to set a password to prevent the person misusing your identity from lifting the suspension.
3. Follow the carrier’s instructions to request an identity theft investigation. Bring your ID when submitting a mobile phone case in person.
4. Check the subscription details and any debts, including billed charges. Then cooperate with the investigation and receive notification of the outcome.

For suspicious lines with budget mobile carriers, you can use the separate contacts listed in the official guidance. Distinguish between help with inquiry or login errors and questions about identity theft investigations.

For landline or internet services, also confirm the subscription with the relevant provider. The official handling guidance explains the procedure for reporting fixed-line service cases separately. Do not assume cancellation or billing issues have been resolved before the investigation results are available.

How to Decide What to Do After Checking at Night

At night, distinguish between inquiry availability and the operating hours for subscription restrictions. The official FAQ states that subscription restrictions are available from 09:00~22:00. Choose your next action based on the inquiry results.

Setting subscription restrictions and suspending an existing line are separate actions. Do not wait until subscription restriction operating hours to request suspension of a suspicious line. When requesting suspension, be sure to set a password to prevent it from being lifted.

How to Resolve Certificate or Login Problems

If you do not have a certificate, obtain one from an issuing institution. According to the joint authentication certificate guidance, the website does not issue certificates. Check the requirements for issuance or reissuance with your financial institution or a joint certificate authority.

1. Check the authentication guidance in the website’s “Authentication Center.”
2. If instructions to install authentication software appear, follow the official guidance.
3. If the error continues, try accessing the website from another PC.
4. If the issue remains unresolved, contact the counseling center at 1670-1382.

If a waiting screen appears, wait for the connection to proceed automatically. The login page warns that refreshing or reconnecting will increase the wait. As directed in the official FAQ, use remote support only when requested by an association counselor.

The Difference Between Text or Email Notifications and Direct Inquiries

Text notifications inform you that a telecommunications service contract has been signed. Direct inquiries let you check your current subscription status. The service introduction also explains email notifications separately.

If you have applied for email notifications, check for the approval email as well. If it does not arrive, check your spam folder and the address you entered. If the issue remains unresolved, you can change the receiving address or contact the counseling center.