Website Uptime Monitor

Monitor website availability and server information for any domain

Current Status

Status
Active
Server Type
Apache
Page Title
We Specialize In Laser Crystal Components and Polarized Optics | ULTICRYSTAL Technology
Meta Description
ULTI CRYSTAL are dedicated to supporting finished laser crystal components and precision polarization optics for solid-state laser at extremely competitive prices. Our products include laser crystals(Nd:YAG,Er:YAG,CTH:YAG,Nd:YVO4 crystal),nonlinear crystals(LBO,BBO,KTP,KDP Crystal),optical crystals(Undoped YVO4,LiNbO3,Undoped YAG,Sapphire crystal),Laser Rods(Nd:YAG Rods),and diffusion bonding crystals modules assemblies for commercial laser systems, instrument systems,and diode pumped solid state (DPSS) laser module applications.
Meta Keywords
crystals,nonlinear crystals,BBO crystal,LBO crystal,ALPHA BBO crystal,KDP crystal,KTP crystal,laser crystals,Nd:YAG crystal,Er:YAG crystal,CTH:YAG crystal,Nd:YVO4 crystal,Optical crystals,undoped YVO4,LiNbO3,undoped YAG,sappphire,laser rods,Nd:YAG rods,diffusion bonding crystals,waveplates,half wave plate, retardation plates,phase shifters,1/2 wave plate,1/4 wave plate,multi order wave plates,low order wave plate,zero order wave plate,true zero order wave plate,achromatic wave plate,dual wavelength wave plate,wave plate holder,polarizers,glan-taylor polzrizer,glan-laser polarizer,glan thompson polarizer,beam splitter cube,wollaston polarizer,rochon polarizer
Last Checked
just now
Last Status Change
No change observed
Last Downtime
Never observed down

Observed Changes

DateStatusServer
9/26/2026, 6:11:00 AMActiveApache

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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.

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About Website Uptime Monitoring

Use the Who.is uptime information to track the availability and server information of websites. This helps track:

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

This information is valuable for website owners, system administrators, and anyone interested in monitoring website reliability and performance.

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.