All systems are operational
Scheduled Maintenance
[SEWAN] Technical maintenance - 17.11.2025

Beginning: 17.11.2025 – 11.30 PM

Ending: 18.11.2025 – 02.30 AM

Impact: switchover on Sophia Voip plateform

 

Dear customer, dear partner,

 

We would like to inform you that a scheduled maintenance will take place on our Voice infrastructure (Sophia).

During this maintenance window, a short interruption of communications is expected.

We apologize for any inconvenience this may cause and thank you for your understanding.

No intervention is needed from your side.

 

Best regards;

SEWAN Technical Team

[SEWAN] Technical maintenance - 19.11.2025

Beginning: 19.11.2025 – 10.00 PM

Ending: 20.11.2025 – 01.00 AM

 

Impact: Few packet loss and SSL-VPN disconnection while switchover.

 

Dear Customer, Dear Partner,

 

Please be informed that our technical team will perform maintenance on firewall cluster 6.

During the two scheduled nights, you may experience brief packet loss and temporary SSL-VPN disconnections during the switchover.

No action is required on your side.

 

Thank you for your understanding.

 

Best regards;

 

SEWAN Technical Team

[SEWAN] Technical maintenance - 21.11.2025

Beginning: 21.11.2025 – 00.00 AM

Ending: 21.11.2025 – 05.00 AM

Impact: none

 

Dear customer, dear partner,

 

EUROFIBER will perform a maintenance on our NNI at Leuven.

No impact is expected

No intervention is needed from your side.

Best regards;

 

SEWAN Technical Team

[SEWAN] Technical maintenance - 26.11.2025 - 28.11.2025

Beginning: 26.11.2025 – 10.00 PM

Ending: 28.11.2025 – 06.00 AM

Impact: max 1h of interruption

Dear customer, dear partner,

 

Eurofiber will perform a large-scale network software update that will improve the performance and future proofing of our network.

Your connection will be interrupted only one time, for 1 hour during this upgrade. If you have a redundant connection, they will ensure that it is not down at the same time as the primary one.

No intervention is needed from your side.

Best regards;

 

SEWAN Technical Team

Past Incidents

Sunday 3rd October 2021

No incidents reported

Saturday 2nd October 2021

No incidents reported

Friday 1st October 2021

No incidents reported

Thursday 30th September 2021

No incidents reported

Wednesday 29th September 2021

No incidents reported

Tuesday 28th September 2021

No incidents reported

Monday 27th September 2021

No incidents reported

Sunday 26th September 2021

No incidents reported

Saturday 25th September 2021

No incidents reported

Friday 24th September 2021

No incidents reported

Thursday 23rd September 2021

General communicate service [SEWAN] General information 23.09.2021

Dear customer, dear partner,

As some of you unfortunately already experienced, recent changes are causing troubles for Luxemburgish VoIP terminating to end properly with Luxemburgish CLI.

 

After several investigations through multiple international carriers, we could discover that a general call barring have been applied by these carriers to not allow calls from Luxembourg to Luxembourg to go through a non-Luxembourgish network.

 

This results that calls issued with Luxembourgish number to a Luxembourgish number will no longer be possible if they are transiting through a non-Luxembourgish carrier, while calls issued with a Belgian number to a Luxembourgish number will perfectly work.

 

The legal explanation received is the following :

“Direct suppliers advised that they observed massive spam calls from different rotative fakes numbers starting with different Luxembourgish prefixes like +352 3xx xxx or +352 9xxxx therefore a blocking has been implemented.

Also, they advised that calls from Luxembourg with Luxembourgish fixed A-numbers should not be routed via international carriers due to spam and fake call situation.”

 

After multiple exchanges, we can confirm that at no moment we, Sewan, is responsible of this situation, but is a victim of it.

As we think this situation is a completely non sense, we are at this very moment trying to find a practical way to work with our suppliers in order to allow our legitimate traffic.

 

At this moment, we cannot confirm that we will find a commercial agreement.

Please note that this situation is general and affect the major international carriers with whom we work.

 

Sewan Team

Wednesday 22nd September 2021

No incidents reported

Tuesday 21st September 2021

No incidents reported

Monday 20th September 2021

No incidents reported

Sunday 19th September 2021

No incidents reported