Investigating - Issue: Operator -Movil SA (Tigo) (732/103;111;165) Quality degradation
Start Time: 08:40 - 02/15/26 End Time: Ongoing
Summary:
We received notification that Movil SA (Tigo) (732/103;111;165) from Colombia (CO) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages.
Telesign is engaged with the operators for updates on resolution.
We'd like to apologize for any inconvenience and appreciate your patience during this service interruption. If you have any questions, please contact support@telesign.com.
Investigating - Start Time: 01:24 AM - 12/04/25 End Time: Ongoing
We received notification that Nexttel (624/04) from Cameroon (CM) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
We received notification that due to the current political situation certain operators (carriers) in Russia are currently experiencing network issues, and this may cause a delay or failure in the delivery of SMS messages. We will inform you once the situation is resolved.
We'd like to apologize for any inconvenience and appreciate your patience during this service interruption. If you have any questions, please contact support@telesign.com.
Jan 13, 2025 - 01:01 PST
Identified - Telesign is currently unable to ensure that messages sent to mainland China are reliably delivered because of restrictions around content, encoding, signatures, and use case. These restrictions have resulted in the blocking of seemingly legitimate and registered customer traffic. Due to this, Telesign is currently able to support China Signature/Short Code registration only for local companies and messages sent through Telesign would be delivered on a best-effort basis with limited support only.
The signature/short code registration process for local companies or those with a local presence typically takes 3-4 weeks.
Recent Telesign StatusPage updates regarding China: o Telesign system status Incident - Important Update: China Signature Changes for Non-Local Companies - China Mobile - 12 August 2024 o Telesign system status Incident - 2-Way service interruptions China (CN) - China Mobile (460/00;02;07;28;04;08) - 21 June 2024 o Telesign system status Incident - 2-Way service interruptions China (CN) - China Unicom (460/01;06;09) - 12 July 2024 o Telesign system status Incident - Quality degradation - China (CN) - Voice Api Issue - [04/11/24] - 15 April 2024 o Telesign system status Incident - Quality degradation - China (CN) - China Mobile (460/00;02;07;28;04;08) - 8/7/24 - 7 August 2024 o Telesign system status Incident - Operator Alert - China (CN) - China Mobile 8/23/24 - 23 August 2024 o Telesign system status Incident - Voice Quality Degradation - China - 8/28/24 - 28 August 2024
Jan 07, 2025 - 13:12 PST
📢 Dear valued clients, we bring you a crucial update! To streamline operations in the UK, SID approval/whitelist is now a prerequisite. Going forward, it is imperative for the end client or brand to provide the following details:
1. Sender ID (case sensitive) 2. Message Content Sample (including any URLs if present in the content) 3. Expected Monthly Volume
Generic SIDs are no longer allowed.
Your cooperation in meeting these requirements is highly appreciated. Posted on
Jan 06, 2025 - 03:27 PST
Update -
We will be undergoing scheduled maintenance during this time.
Oct 31, 2025 - 10:35 PDT
Update -
We will be undergoing scheduled maintenance during this time.
Oct 02, 2025 - 08:55 PDT
Update -
We will be undergoing scheduled maintenance during this time.
Sep 24, 2025 - 13:26 PDT
Update -
We will be undergoing scheduled maintenance during this time.
Sep 22, 2025 - 13:58 PDT
Scheduled -
Effective October 1st, 2025, Operator Claro has mandated that all traffic must complete Sender ID registration to ensure message delivery.
Starting October 1st, clients are required to begin registering their SenderIDs. However, please note that unregistered and generic SenderIDs will not be blocked until November 1st. During this transition period, traffic delivery will not be impacted, but we strongly encourage all clients to complete their senderID registration ahead of he November deadline.
Required Details:
*Registration ETA: 7 Days
Sender ID Message sample Company name Traffic Type (OTP/ARN/MKT) Company website (URL) Industry Type Claro Registration Form
✅ Action Required:
Please submit your requests with the information as soon as possible by going to your My Telesign portal or sending the necessary information to Support@telesign.com
Thank you for your attention to this critical update.
Sep 22, 2025 - 13:46 PDT
While blocking will not commence on October 3rd, it remains essential to register your Sender IDs to avoid them being changed to "Likely Scam." Sender ID registration can be completed directly on the ComReg portal: https://senderid.comreg.ie/sender-id-sign-up.
For more details about the Sender ID Registry, please visit ComReg’s official webpage: www.comreg.ie/senderid.
Thank you for your continued cooperation and understanding. If you have any questions or need further assistance, please don’t hesitate to contact us. Posted on
Oct 02, 2025 - 07:39 PDT
📢 Important Announcement: Canada Freeze/Brownout Period
The Canadian Carrier Brownout is an annual provisioning freeze during which new Short Codes or changes requiring network updates, such as aggregator migrations or price point changes, do not occur. To meet the last provisioning date for 2025 and to ensure a Short Code is provisioned or migrated by all carriers, applications must be submitted by October 23rd at 1:00pm EST. Requests correctly submitted by the deadline are expected to be provisioned between Nov. 11 and Nov. 17, 2025.
Freeze Period:
Start: October 23, 2025 at 1:00pm EST
End: January 13, 2026
Applications submitted after this deadline will be scheduled for provisioning in January 2026.
We appreciate your understanding and cooperation during this time. Posted on
Oct 09, 2025 - 08:14 PDT
The Australian Communications and Media Authority (ACMA) has officially applied a new timeline for the new Australian SMS sender ID register. As before, every business or agency seeking to use a sender ID will have to comply with the registration guidelines. Please be aware of the following timeline:
• from 15 October 2025, Telcos and electronic message service providers (EMSPs) will need to apply to the ACMA if they want to participate in the SMS Sender ID Register and continue to carry messages with sender IDs; • between 30 November 2025 and 30 June 2026, businesses and organizations will need to register sender IDs via their participating telco or EMSPs; • from 1 July 2026, onward only participating telcos will be able to send SMS and MMS with sender IDs, and unregistered sender IDs will be replaced with the word ‘Unverified’.
We recommend brand owners to review your current sender IDs under the official regulation as follows:
• Alphanumeric supported: 2-11 characters; • Only-number not supported; • Not containing the word 'Unverified'; • Not starting or ending with a space or underscore; • Not including prohibited words: https://www.acma.gov.au/restricted-terms-sender-ids; • Not containing a word or words that are offensive, deceptive or misleading.
For complete registration details, Telesign will ensure that new updates are communicated promptly, and that we remain fully compliant with the new regulation. In the meantime, no impact is expected for existing sender ID usage in Australia, before 1 July 2026. Posted on
Dec 11, 2025 - 02:58 PST
Scheduled -
To comply with UK regulatory requirements, it is mandatory to whitelist Sender IDs for all traffic towards the United Kingdom.
Any traffic sent using non-whitelisted Sender IDs will be blocked.
Please note that the exact enforcement date has not yet been confirmed. However, we strongly recommend ensuring compliance as soon as possible.
All Sender IDs currently used by Telesign clients have already been whitelisted.
Action Required
If you plan to introduce new Sender IDs, please submit your requests in advance to avoid any potential service disruption once blocking is enforced.
Required Details for Sender ID Whitelisting
To whitelist a new Sender ID, please provide the following information:
Sender ID Company Name Company URL Important Reminder
The reselling traffic is not permitted in the UK.
Thank you for your attention to this important update. If you have any questions or require assistance, please reach out to us.
Jan 19, 2026 - 02:55 PST
In accordance with the latest regulation issued by the Taiwan NCC, "Brand Name Registration Effective 1 November 2025," please be informed of the updated procedures for registering content-related elements following brand name registration.
#Key Requirement: The brand name must be preregistered prior to initiating any messaging to Taiwan.
✔️ Messages containing no URL or phone number do not require separate registration. However, the sender must include the registered brand name within all message content. It is strongly recommended to place the brand name at the beginning of each message.
✔️Messages containing a URL or phone number must have those elements preregistered before transmission. To register a URL or phone number, please prepare the following information:
a. Registered brand name b. Taiwan KYC registration form (identical to the form used for brand name registration): Please complete all required fields.
Note: Mobile operators may request additional documentation on a case-by-case basis. Should further materials be required, we will notify you following the submission of your URL or phone number registration.
Should you have any questions or require further clarification, please do not hesitate to contact us. Posted on
Feb 05, 2026 - 01:17 PST
Scheduled -
As the Lunar New Year approaches, Vietnam operators have shared important updates regarding their holiday freeze period. Please review the key details below to ensure uninterrupted service:
Freeze Period: February 14th to February 22nd
Please submit Sender ID registrations by February 12th. This will ensure your submissions reach the operators before the freeze period begins. Normal processing will resume on February 23rd. Any new Sender ID registration requests submitted during the freeze period will only be processed by operators after the freeze ends.
We appreciate your understanding and cooperation during this time.
Feb 05, 2026 - 21:01 PST
We have been informed that our partners in the United Kingdom (United Kingdom EE Communications and Orange) will conduct planned maintenance on the specified date and time. Customers using the Phone ID Add-Ons, including Number Deactivation, Contact Match, and SIM Swap, may experience temporary delays during this maintenance period. We recommend planning accordingly. Posted on
Feb 13, 2026 - 01:46 PST
Issue: US Operator - ATT Mobility (310/016;030;150;170;280;380;410;670) Maintenance
Date: 02/18/26 Start Time: 10:00 PM PST at 02/18/26 End Time: 04:00 AM PST at 02/19/26
Summary: We have received notification that US Operator ATT Mobility (310/016;030;150;170;280;380;410;670) will perform planned maintenance on the date and time specified above. During this time period, customers with Dedicated Short Codes that send SMS messages to ATT Mobility (310/016;030;150;170;280;380;410;670) users may experience a temporary delay in message delivery, so we kindly ask that you plan accordingly. ATT Mobility (310/016;030;150;170;280;380;410;670) operator maintenance will not affect other US operators.
On behalf of the operator, we'd like to apologize for any inconvenience and appreciate your patience during this service window.
If you have any questions, please contact us at support@telesign.com. Posted on
Feb 12, 2026 - 13:08 PST
Past Incidents
Feb 15, 2026
Unresolved incident: Operator Service Alert - Colombia (CO) - Movil SA (Tigo) (732/103;111;165).
Resolved -
Date: 13/12/26 Start Time: 6:31 am PST End Time: 7:47 am PST
We received notification from our partner that the issue previously noticed in Canada has been resolved. End users should no longer experience delays, as all services are back to functioning properly.
Feb 13, 08:04 PST
Identified -
Date: 13/12/26 Start Time: 06:31 am PST End Time: Ongoing
We received notification from our partner that Phone ID (sim_swap/contact_match/subscriber_status) is currently having issues in Canada, which may cause some delays. We will inform you once there is a resolution.
We'd like to apologize for any inconvenience and appreciate your patience during this service window.
Resolved -
Start Time: 1:31 AM PDT - 2/13/26 End Time: 3:08 AM PDT - 2/13/26
We received notification that the network issues previously reported by Virgin KSA (420/05 from Saudi Arabia (SA) have been resolved. Virgin KSA (420/05 end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
SF 01129403
Feb 13, 03:59 PST
Investigating -
Start Time: 1:31 AM PDT - 2/13/26 End Time: Ongoing
We received notification that Virgin KSA (420/05) from Saudi Arabia (SA) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Resolved -
Start Time: 09:50 am PST - 02/12/26 End Time: 10:55 am PST - 02/12/26
We received notification that the network issues previously reported by Safaricom Limited (639/02) from Kenya (KE) have been resolved. Safaricom Limited (639/02) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
SF 01129115
Feb 12, 11:35 PST
Investigating -
Start Time: 09:50 am PST - 02/12/26 End Time: Ongoing
We received notification that Safaricom Limited (639/02) from Kenya (KE) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
We received notification that the network issues previously reported by Safaricom Limited (639/02) from Kenya (KE) have been resolved. Safaricom Limited end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact support@telesign.com.
We received notification that Safaricom Limited (639/02) from Kenya (KE) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Resolved -
Start Time: 5:11 AM PST - 02/11/26 End Time: 11:40 AM PST - 02/11/26
We received notification that the network issues previously reported by Corporacion Digitel C.A. (DIGITEL) (734/01;02;03) from Venezuela (VE) have been resolved. Corporacion Digitel C.A. (DIGITEL) (734/01;02;03) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact support@telesign.com.
SF 01128496
Feb 11, 11:43 PST
Investigating -
Start Time: 5:11 AM PST - 02/11/26 End Time: Ongoing
We received notification that Corporacion Digitel C.A. (DIGITEL) (734/01;02;03) from Venezuela (VE) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Resolved -
Date: 10/02/26 Start Time: 5:30 AM PST End Time: 5:43 AM PST
We received notification from our partner that the issue previously noticed in the United Kingdom has been resolved. End users should no longer experience delays, as all services are back to functioning properly.
Feb 10, 09:55 PST
Investigating -
We have received notification that services for Phone ID live - United Kingdom are experiencing delays. We will inform you as soon as we receive a resolution.
Feb 10, 06:05 PST
Completed -
The scheduled maintenance has been completed.
Feb 9, 19:25 PST
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Feb 9, 06:00 PST
Scheduled -
Date: 02/09/26 Start Time: 06:00 AM PST End Time: 19:25 PM PST
We have been informed that one of our partners in the United Kingdom will conduct planned maintenance at the specified date and time. Customers using the Phone ID: Contact Match/SIM Swap/Call forward detection/Age Verify/Number Deactivation - during this maintenance period may experience temporary delays. We recommend planning accordingly.
If you have any questions, please contact us at support@telesign.com.
Feb 3, 02:57 PST
We have been informed that one of our partners in United Kingdom will conduct planned maintenance at the specified date and time. Customers using the Phone ID Contact Match, Age Verify, SIM Swap, Call Forward Detect and Number Deactivation during this maintenance period may experience temporary delays. We recommend planning accordingly.
If you have any questions, please contact us at support@telesign.com.
Feb 7, 07:26 PST
We received notification that the network issues previously reported by Claro Comunicacion Celular S.A (Comcel S.A) (732/101) from Colombia have been resolved. Claro Comunicacion Celular S.A (Comcel S.A) (732/101) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact support@telesign.com.
Feb 7, 04:37 PST
We received notification that Claro Comunicacion Celular S.A (Comcel S.A) (732/101) from Colombia is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages.
Telesign is engaged with the operators for updates on resolution.
We'd like to apologize for any inconvenience and appreciate your patience during this service interruption. If you have any questions, please contact support@telesign.com.
Resolved -
Date:02/07/26 Start Time: 12:15 AM PST End Time: 01:15 AM PST
We received notification that the network issues previously reported by Indosat Ooredoo Hutchison (510/01;03;21;89) from Indonesia (ID) have been resolved. Indosat Ooredoo Hutchison (510/01;03;21;89) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact support@telesign.com.
Feb 7, 01:17 PST
Investigating -
Start Time: 12:15 AM PST - 02/07/26 End Time: Ongoing
We received notification that Indosat Ooredoo Hutchison (510/01;03;21;89) from Indonesia (ID) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
We have been informed that one of our partners in the United Kingdom will conduct planned maintenance at the specified date and time. Customers using the Phone ID Contact Match, Age Verify, and Number Deactivation during this maintenance period may experience temporary delays. We recommend planning accordingly.
If you have any questions, please contact us at support@telesign.com.
Feb 5, 13:12 PST
We have been informed that one of our partners in Germany and Netherlands will conduct planned maintenance at the specified date and time. Customers using the Phone ID Contact and SimSwap during this maintenance period may experience temporary delays. We recommend planning accordingly.
If you have any questions, please contact us at support@telesign.com.
Jan 30, 02:26 PST
Resolved -
Date: 2/4/25 Start Time: 05:40 AM PST - 2/4/25 End Time: 7:10 AM PST - 2/4/25
Summary:
The issue has been resolved. The previously reported quality degradation affecting SMS delivery to the United States (US) is no longer present, and message delivery has returned to normal.
Thank you for your patience, and we apologize for any inconvenience caused.
Investigating -
Issue: United States (US) - Multiple MNOs Quality degradation
Start Time: 05:40 AM PST - MM/DD/YY
Summary:
We currently experience quality degradation toward United States (US). SMS messages towards multiple operators may face delays or difficulties in delivery.
Telesign is engaged with carrier partners for updates on resolution. We'd like to apologize for any inconvenience and appreciate your patience during this service interruption.
Resolved -
Start Time: 02:47 AM PST - 02/04/26 End Time: 4:50 - 02/04/26
We received notification that the network issues previously reported by P4 Sp. z o.o (PLAY) (260/06;98) from Poland (PL) have been resolved. P4 Sp. z o.o (PLAY) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
SF 01124870
Feb 4, 05:25 PST
Investigating -
Start Time: 02:47 AM PST - 02/04/26 End Time: Ongoing
We received notification that P4 Sp. z o.o (PLAY) (260/06;98) from Poland (PL) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Resolved -
Start Time: 09:40 pm PST - 02/03/26 End Time: 01:06 am PST - 02/04/26
We received notification that the network issues previously reported by Mobitel (413/01) from Sri Lanka (LK) have been resolved. Mobitel (413/01) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
We received notification that Mobitel (413/01) from Sri Lanka (LK) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Completed -
The scheduled maintenance has been completed.
Feb 4, 00:00 PST
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Feb 3, 21:00 PST
Scheduled -
Issue: Planned Maintenance - United States (US)
Start Time: 9:00 PM PST - 02/03/26 End Time: 00:00 AM - 02/04/26
Summary:
We received notification that the SMS carrier partner from United States (US) will perform planned maintenance on the date and time specified above.
During this time period, customers with DLC traffic that send SMS messages to T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) users may experience a temporary delay in message delivery, so we kindly ask that you plan accordingly.
We have been informed that one of our partners in the United Kingdom will conduct planned maintenance at the specified date and time. Customers using the Phone ID Contact Match during this maintenance period may experience temporary delays. We recommend planning accordingly.
We received notification that the network issues previously reported by GrameenPhone (470/01;001) from Bangladesh (BD) have been resolved. GrameenPhone (470/01;001) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
On behalf of the Operator, we apologize for any inconvenience this issue may have caused. If you have additional questions, please feel free to contact support@telesign.com.
Feb 2, 16:45 PST
We received notification that GrameenPhone (470/01;001) from Bangladesh (BD) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Resolved -
Start Time: 09:15pm PST - 02/01/26 End Time: 02:33 am PST - 02/02/26
We received notification that the network issues previously reported by TeleTalk (470/04) from Bangladesh (BD) have been resolved. TeleTalk (470/04) end users should no longer experience delays receiving SMS messages as all services are back to functioning properly.
We received notification that TeleTalk (470/04) from Bangladesh (BD) is currently experiencing network issues, and this may cause a delay in the delivery of SMS messages. We will inform you once the operator has come to a resolution.
Completed -
The scheduled maintenance has been completed.
Feb 2, 02:00 PST
In progress -
Scheduled maintenance is currently in progress. We will provide updates as necessary.
Feb 1, 22:00 PST
Scheduled -
Issue: US Operator - United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) Maintenance
Date: 02/01/2026 Start Time: 10:00 PM PST 02/01/2026 End Time: 02:00 AM PST 02/02/2026
Summary: We have received notification that US Operator United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) will perform planned maintenance on the date and time specified above. During this time period, customers with Dedicated Short Codes that send SMS messages to United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) users may experience a temporary delay in message delivery, so we kindly ask that you plan accordingly. This United States (US) - T-MOBILE (310/023;024;025;026;053;120;160;200;210;220;230;240;250;260;270;310;490;530;580;660;770;800;830) operator maintenance will not affect other US operators.
On behalf of the operator, we'd like to apologize for any inconvenience and appreciate your patience during this service window.
If you have any questions, please contact us at support@telesign.com.
Jan 29, 15:00 PST