SIP US Outage History

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SIP US had 11 outages in the last 2 years totaling 52h 24m of downtime, averaging 0.5 incidents per month.

There were 11 SIP US outages since January 14, 2025 totaling 52h 24m of downtime. Each is summarised below. Incident details, duration, and resolution information.

Source: status.sip.us

Critical October 21, 2026

SIP.US Security Advisory: PHP2SHELL Vulnerability

Detected by Pingoru
Oct 21, 2026, 01:01 PM UTC
Resolved
Oct 21, 2026, 06:01 PM UTC
Duration
4h 59m
Affected: Management Portal
Timeline · 2 updates
  1. monitoring Oct 21, 2026, 01:01 PM UTC

    We are actively responding to PHP2SHELL, a security vulnerability affecting widely used web software. Our Engineering and Security teams are closely monitoring our systems and taking appropriate measures to address and mitigate any potential risk. At this time, we do not expect inbound or outbound calling traffic to be affected, and normal call processing should continue without interruption. The security and integrity of our systems and customer information remain our highest priority. If we identify a threat requiring additional protective measures, certain systems or services may be temporarily restricted or taken offline, potentially with limited advance notice. We understand how important reliable voice communications are to your business. Our teams will continue to closely monitor the situation and will provide additional updates if there are any changes that could impact SIP.US services.

  2. resolved Oct 21, 2026, 06:01 PM UTC

    The PHP2SHELL security patch has been successfully applied, and both the SIP.US customer portal is back online and fully accessible.

Read the full incident report →

Notice September 16, 2026

Customer Security Alert: Phishing emails being sent that appear to originate from [email protected].

Detected by Pingoru
Sep 16, 2026, 09:10 PM UTC
Resolved
Sep 16, 2026, 09:10 PM UTC
Duration
–
Affected: Management Portal
Timeline · 1 update
  1. resolved Sep 16, 2026, 09:10 PM UTC

    Customer Security Alert: We have identified phishing emails being sent that appear to originate from [email protected]. Please be cautious with unexpected emails, links, attachments, and requests for information. If you are unsure whether a message is legitimate, contact our Support team directly before taking any action.

Read the full incident report →

Major September 3, 2026

Outbound Faxing

Detected by Pingoru
Sep 03, 2026, 06:14 PM UTC
Resolved
Sep 03, 2026, 09:21 PM UTC
Duration
3h 7m
Affected: Fax Service
Timeline · 3 updates
  1. investigating Sep 03, 2026, 06:14 PM UTC

    We are currently investigating failing outbound faxes.

  2. monitoring Sep 03, 2026, 08:01 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Sep 03, 2026, 09:21 PM UTC

    Faxing should now be fully operational

Read the full incident report →

Minor September 2, 2026

GW4 and GW5 degraded performance

Detected by Pingoru
Sep 02, 2026, 02:04 PM UTC
Resolved
Sep 02, 2026, 04:21 PM UTC
Duration
2h 16m
Affected: Inbound VoiceOutbound Voice
Timeline · 4 updates
  1. investigating Sep 02, 2026, 02:04 PM UTC

    We are currently investigating degraded performance on GW4 and GW5, however, we are continuing to see calls complete.

  2. identified Sep 02, 2026, 02:37 PM UTC

    The issue has been identified and a fix is being implemented.

  3. monitoring Sep 02, 2026, 03:20 PM UTC

    A fix has been implemented and we are monitoring the results.

  4. resolved Sep 02, 2026, 04:21 PM UTC

    This incident has been resolved.

Read the full incident report →

Critical April 24, 2026

Fax to Email Service

Detected by Pingoru
Apr 24, 2026, 08:11 PM UTC
Resolved
Apr 25, 2026, 12:01 AM UTC
Duration
3h 50m
Affected: Fax Service
Timeline · 3 updates
  1. investigating Apr 24, 2026, 08:11 PM UTC

    We are currently investigating an issue with the fax-to-email service

  2. investigating Apr 25, 2026, 12:01 AM UTC

    We are continuing to investigate this issue.

  3. resolved Apr 25, 2026, 12:01 AM UTC

    We have identified and resolved the issue and have conducted multiple tests confirming that the Fax‑to‑Email service is fully operational and restored.

Read the full incident report →

Major April 24, 2026

Fax-to-Email

Detected by Pingoru
Apr 24, 2026, 02:12 PM UTC
Resolved
Apr 24, 2026, 06:59 PM UTC
Duration
4h 47m
Affected: Fax Service
Timeline · 3 updates
  1. investigating Apr 24, 2026, 02:12 PM UTC

    We are currently investigating an issue with the fax-to-email service.

  2. monitoring Apr 24, 2026, 05:05 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Apr 24, 2026, 06:59 PM UTC

    This incident has been resolved.

Read the full incident report →

Major March 3, 2026

Calling Issues Impacting Audio and Call Completion

Detected by Pingoru
Mar 03, 2026, 03:00 PM UTC
Resolved
Mar 03, 2026, 05:21 PM UTC
Duration
2h 20m
Affected: Inbound VoiceOutbound Voice
Timeline · 3 updates
  1. investigating Mar 03, 2026, 03:00 PM UTC

    We are actively aware of an increase in customer reports related to inbound and outbound call failures, including audio issues and call completion failures. Our teams are actively working to investigate and restore expected calling behavior.

  2. monitoring Mar 03, 2026, 03:26 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Mar 03, 2026, 05:21 PM UTC

    This issue has been fully resolved

Read the full incident report →

Minor February 25, 2026

Inbound Fax Transmission Issues

Detected by Pingoru
Feb 25, 2026, 10:34 PM UTC
Resolved
Feb 26, 2026, 03:30 PM UTC
Duration
16h 55m
Affected: Fax Service
Timeline · 4 updates
  1. investigating Feb 25, 2026, 10:34 PM UTC

    We are aware that multiple customers are reporting issues with incoming faxes failing to be delivered. We are actively investigating the matter and will provide an update as more information becomes available.

  2. identified Feb 25, 2026, 11:05 PM UTC

    We have identified that inbound fax transmissions are successfully reaching the fax service; however, the Fax ATAs are not processing the fax transmissions correctly. We are actively investigating the matter and will provide an update as more information becomes available.

  3. monitoring Feb 26, 2026, 01:23 AM UTC

    Faxing service partners have identified a root cause and reverted changes that had contributed to delivery issues. Faxing services have resumed and are being monitored.

  4. resolved Feb 26, 2026, 03:30 PM UTC

    Service has been fully restored, and we have validated that inbound faxes and notifications are once again being handled and delivered correctly.

Read the full incident report →

Minor January 21, 2026

Intermittent Outbound Issues

Detected by Pingoru
Jan 21, 2026, 04:24 PM UTC
Resolved
Jan 21, 2026, 07:35 PM UTC
Duration
3h 10m
Affected: Outbound Voice
Timeline · 3 updates
  1. investigating Jan 21, 2026, 04:24 PM UTC

    We are investigating an issue that is causing intermittent outbound call failures.

  2. monitoring Jan 21, 2026, 04:40 PM UTC

    A fix has been implemented and we are monitoring the results.

  3. resolved Jan 21, 2026, 07:35 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor January 15, 2025

Intermittent Inbound Call Failures Impacting AT&T Customers in Southeast Florida

Detected by Pingoru
Jan 15, 2025, 04:12 PM UTC
Resolved
Jan 15, 2025, 10:22 PM UTC
Duration
6h 9m
Affected: Inbound Voice
Timeline · 7 updates
  1. investigating Jan 15, 2025, 04:12 PM UTC

    We are actively collaborating with our peer networks to resolve the intermittent inbound call failures impacting AT&T customers, particularly in Southeast Florida, including the Miami and Melbourne areas. This issue appears to be localized to this region. We will continue to monitor the situation closely and provide updates as new information becomes available.

  2. investigating Jan 15, 2025, 05:15 PM UTC

    We are continuing to work with our peer networks to address this issue.

  3. investigating Jan 15, 2025, 06:30 PM UTC

    We are continuing to work with our peer networks to address this issue.

  4. investigating Jan 15, 2025, 07:33 PM UTC

    We are continuing to work with our peer networks to address this issue.

  5. identified Jan 15, 2025, 07:48 PM UTC

    Our peer networks have identified the issue and are working on a fix.

  6. monitoring Jan 15, 2025, 09:05 PM UTC

    A fix has been implemented by the upstream carrier, and we are currently monitoring the results.

  7. resolved Jan 15, 2025, 10:22 PM UTC

    This incident has been resolved.

Read the full incident report →

Minor January 14, 2025

Intermittant Inbound Call Failures AT&T

Detected by Pingoru
Jan 14, 2025, 03:02 PM UTC
Resolved
Jan 14, 2025, 07:49 PM UTC
Duration
4h 46m
Affected: Inbound Voice
Timeline · 5 updates
  1. investigating Jan 14, 2025, 03:02 PM UTC

    We are actively working with our peer networks to address the intermittent inbound call failures affecting AT&T customers, specifically in Southeast Florida, including the Miami and Melbourne areas. This issue appears to be localized to that region. We will continue to monitor the situation and provide updates as we receive them.

  2. investigating Jan 14, 2025, 04:01 PM UTC

    We are continuing to work with our peer networks to address this issue.

  3. identified Jan 14, 2025, 05:05 PM UTC

    Our peer networks have identified the issue and are working on a fix.

  4. monitoring Jan 14, 2025, 06:16 PM UTC

    A fix has been implemented and we are monitoring the results.

  5. resolved Jan 14, 2025, 07:49 PM UTC

    This incident has been resolved.

Read the full incident report →