Some systems are experiencing issues
Scheduled Maintenance
[SEWAN] Technical maintenance - 25.02.2026

Beginning: 25.02.2026 – 12.00 AM

Ending: 25.02.2026 – 1.00 PM

 

Impact: Cloud firewall cluster 7 console not reachable

 

Dear Customer, Dear Partner,

 

Please be informed that our technical team will carry out maintenance on the firewall GUI (cluster 7).

During this maintenance window, the management console will not be accessible. No impact on production services is expected.

Thank you for your understanding.

 

Best regards,

SEWAN Technical Team

[SEWAN] Technical maintenance - 25.02.2026

Beginning: 25.02.2026 – 06.00 PM

Ending: 25.02.2026 – 09.00 PM

 

Impact: none  

Dear Customer, Dear Partner,

 

Please be informed that our technical team will perform a maintenance on our VOIP infrastructure.

 

No service disruption is expected during this maintenance window.

 

Best regards,

SEWAN Technical Team

[SEWAN] Technical maintenance - 02.03.2026

Beginning: 02.03.2026 – 10.00 PM

Ending: 03.03.2026 – 06.00 AM

 

Impact: Two short service interruptions of a few minutes affecting Network, VoIP and Hosting services during switchover.

 

Dear Customer, Dear Partner,

 

Please be informed that our technical team will perform an upgrade on two network core devices.

 

During the scheduled maintenance window, you may experience two short service interruptions lasting a few minutes during service failover between our two datacenters. This may temporarily affect firewall cloud, Sophia VOIP telephony and hosting services.

 

No action is required on your side.

 

Best regards,

SEWAN Technical Team

[SEWAN] Technical maintenance - 04.03.2026

Beginning: 04.03.2026 – 11.00 PM

Ending: 05.03.2026 – 02.00 AM

 

Impact: a few calls cut during VM migration (~5min)

 

Dear Customer, Dear Partner,

 

Please be informed that our technical team will perform a maintenance on our VOIP infrastructure.

 

During this maintenance window, we will be performing virtual machine migrations as part of our ongoing infrastructure optimization.

A few calls may be briefly interrupted (approximately 5 minutes)

We are taking all necessary measures to minimize the impact and duration of any disruption.

No action is required on your side.

 

Best regards,

SEWAN Technical Team

[SEWAN] Technical maintenance - 05.03.2026

Beginning: 05.03.2026 – 06.00 AM

Ending: 05.03.2026 – 06.30 AM

 

Impact: PPPOE session restart - brief service interruption

 

Dear Customer, Dear Partner,

 

PlPlease be informed that our technical team will perform a maintenance on our VDSL/FTTH infrastructure.

 

During this maintenance window, we will perform a configuration update as part of our ongoing network optimization.

Active PPPoE sessions will be restarted, which may result in a brief service interruption.

We are taking all necessary measures to minimize the impact and duration of any disruption.

No action is required on your side.

 

Best regards,

SEWAN Technical Team

Past Incidents

Saturday 23rd January 2021

No incidents reported

Friday 22nd January 2021

General communicate service [SEWAN] Unexpected disturbances - 22.01.2021

Beginning: 22.01.2021 – 9.46 AM

Ending: 22.01.2021 – 2.35 PM

Impacts: Outbound mobile calls partially unreachable

 

Dear customer, dear partner,

 

Please note that today one of our upstream mobile carrier was, without any valid reason, blocking a significant part of our outbound Belgium mobile traffic. As we have in place multiple failover scenery, most of the calls blocked were mitigated toward other carriers.

Nevertheless, part of the traffic sent to the faulty upstream carrier was sending back to us an incoherent error code (403. Forbidden) which we (as all other telecom carriers) consider a user based return code (meaning a code stating that the recipient of the call does not want to accept it).

Therefore, this wrongly given code made our system consider as a normal behave and, therefore, did not trigger failover routings.

 

When we discovered this double fault, we temporarily adapted our routing, and raised an emergency case toward the upstream carrier for investigation.

 

Best regards; SEWAN Technical Team

Thursday 21st January 2021

General communicate service [SEWAN] Unexpected disturbances - 21.01.2021

Beginning: 21.01.2021 – 11.05 AM

Ending: 21.01.2021 – 11.46 AM

Impacts: External backbone network supplier DDOSed

 

Dear customer, dear partner,

Please note that since 16/01/2021, one of our backbone network supplier is experiencing DDOS attacks. Until this morning, all our failover systems have been able to mitigate their problems in order to not impact our services in any kind;

Nevertheless, since this morning 11.05AM, we have noticed that the attacks they are suffering were so intense that we experienced cascaded disturbances, mainly impacting outbound calls.

At 11.46AM, we could get a technical confirmation that the DDOS attacks were mitigated by our supplier. The situation is back to normal, and we are closely monitoring their activities in order to activate backup procedures if this happens again.

 

Best regards;

SEWAN Technical Team

Wednesday 20th January 2021

No incidents reported

Tuesday 19th January 2021

No incidents reported

Monday 18th January 2021

No incidents reported

Sunday 17th January 2021

No incidents reported

Saturday 16th January 2021

No incidents reported

Friday 15th January 2021

No incidents reported

Thursday 14th January 2021

No incidents reported

Wednesday 13th January 2021

General communicate service [SEWAN] General information 13.01.2021

***** UPDATE - 13.01.2021 - 9.25PM *****

At 9.25PM today, Telenet confirmed the situation was resolved.

   

Beginning: 13.01.2021 – 10.00 AM

Ending: on going

Impact: Telenet fiber down

 

Dear customer, dear partner,

 

Please note that since 10AM this morning, we have noticed partial disturbances on Telenet internet lines on some areas of Brussels.

Therefore, if you or your customer(s) experience internet/telephony issues, this may be the root cause.

 

At this moment, we have not received any official information that their problem is fixed.

 

SEWAN Technical Team

Tuesday 12th January 2021

No incidents reported

Monday 11th January 2021

No incidents reported

Sunday 10th January 2021

No incidents reported

Saturday 9th January 2021

No incidents reported