Website Down Checker

See whether a site was up at our last check and when it last went down.

Current Status

Status
Active
Server Type
Apache/2.2.15 (CentOS)
Page Title
Online PDH Provider for Engineers Land Surveyors Architects PE CEU PLS CPC LS CPD PDU - Professional Development Hours and Continuing Education Units for AIA LU RA sponsor courses credits hour units self home study PDH free CEU license renewal CE design civil engineer structural mechanical electrical architectural engineering
Meta Description
Official PDH Online Website - PDHonline.com provides online (web-based) professional development courses (PDH, hours units credits or PDHs) continuing education units (CEU CEUs) and learning units (LU LUs) for engineer (engineers PE P.E.) land surveyor (surveyors LS PLS) geologist (geologists PG) and architect (architects AIA A.I.A. RA) provider sponsor free engineering forum software technical publication or resource
Meta Keywords
Official PDH Online Website - PDHonline PDHonline.com PDHonline.org provider sponsor web-based distant continuing independent self home study Internet instruction e-learning e-classroom free education course courses PDH ePDH iPDH e-PDH i-PDH unit units hour hours credit credits CEU LU learning units CPC CPD professional competency requirement requirements license licensed professionals renewal PE LS PLS AIA RA CE design civil structural architectural engineer engineers engineering land surveyor surveyors geologist geologists architect architects software technical resource publication publications notes forum forums discussion group groups
Last Checked
just now
Last Status Change
Came back up — 20 days ago (10/25/2026)
Last Downtime
First seen down 9 months ago (2/7/2026), back up 20 days ago

Observed Changes

DateStatusServer
10/25/2026, 11:02:47 PMActiveApache/2.2.15 (CentOS)
2/11/2026, 4:43:38 AMInactiveUnknown
2/9/2026, 12:36:35 AMInactiveUnknown
2/7/2026, 9:56:07 PMInactiveUnknown

Don't just check uptime once — watch it 24/7

This is a one-time check. Turn on monitoring and we'll watch the domains that matter to you continuously, notifying you the moment anything moves across all three signals:

Uptime monitor with 7-day uptime percentage, failed checks, average latency by region, and daily outages

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor uptime free

Free for your first domain: uptime, DNS, and certificate together. No credit card.

About Website Uptime Monitoring

This page shows whether we could reach a website the last time we checked it. We also keep a record of when it went down and came back, so you can see whether an outage is new or has happened before. For each site we show:

  • Website availability and response status
  • Server software and configuration
  • Meta information including titles and descriptions
  • Historical uptime patterns

What this page reports

  • Last status change: When we last saw a site switch between reachable and unreachable
  • Last downtime: When a site was most recently seen down, and whether it has come back
  • Server and meta information: The server software, page title and meta tags we last observed

We check a domain at most once a day and record an observation only when something changes, so these are the times a change was seen rather than the exact moment it happened. For continuous, minute-by-minute checks with alerting, use website monitoring.


Disclaimer: Who.is is not affiliated with, endorsed by, or connected to any of the domains displayed on this page. We provide this information as a public service for informational purposes only.