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Author: Brad Canham

UltaDNSOutage
Network Services Monitoring

Another Neustar UltraDNS Outage | UltraDNS Goes Down

October 15: Neustar UltraDNS Outage October 15, 2015 – Neustar UltraDNS Down – Dotcom-Monitor is tracking a Neustar UltraDNS outage at this time. The UltraDNS outage appears to have started at approximately 4:00 pm CST. The UltraDNS issue resulted in (as it should) error alerts to clients. Monitoring that does not cache DNS

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Dotcom-Monitor – Login issue

August 27 – Dotcom-Monitor is tracking a current widespread Level 3 issue impacting the Level 3 network in North America. The issue has also impacted  the log-in and trouble ticket aspect of the Dotcom-Monitor system itself. Dotcom-Monitor is working directly with Level 3 to resolve the issue and will provide an update when more details become

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Website Uptime

Facebook Down – Free Worldwide Test Tool

Dotcom-Monitor is currently tracking a Facebook downtime incident.

To verify the current status of Facebook in real-time from around the world, users can attempt to connect simultaneously from 20 locations worldwide using Dotcom-Monitor’s free Facebook downtime test tool.

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A Tale of Monitoring DNS Blacklists

For George, the clean-up is just beginning. He is not even yet aware that his domain is blacklisted. All he knows is that he can’t send out additional emails, the update email on the company party that evening is now a fire-drill, and his boss is giving the system administrator and him the stink eye. The problem of not knowing for hours that your site has appeared on a DNS Blacklist (DNSBL) and that email—and, even worse, potentially website visitors—are being rejected is a problem with both primary impacts and multiple secondary impacts.

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Innovations in Microsoft Exchange Monitoring

Microsoft Exchange continues to grow in popularity, but until recently active monitoring via full round-trip processes have been lacking in the marketplace. As a result network administrators have found it difficult to accurately pinpoint Microsoft Exchange issues effectively. Dotcom-Monitor’s Microsoft Exchange Monitoring, actively monitors both the availability and performance of Exchange components and provides alerts and diagnostics information when an issue is detected. Among a wealth of other features, the solution includes the industry’s only tool for monitoring ActiveSync externally, so it mimics the same experience a real user would receive.

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CDN Monitoring and “Cheshire Cat” Websites

How can you tell if the CDN you’re utilizing is actually paying dividends in terms of speeding up delivery of content to your website users? CDN monitoring can help the IT department—which has lost significant control over the servers that store the content because of CDN use—track key metrics to determine CDN performance and see if the CDN is living up to its SLA.

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Another Neustar UltraDNS Outage

April 30, 2014 – Neustar UltraDNS Down – Dotcom-Monitor is tracking a Neustar UltraDNS outage at this time. The UltraDNS outage appears to have started at approximately 10:34 am CST and extended to 12:47 noon while stabilizing. (UPDATE- As of 4:07 pm CST UltraDNS continues to experience DNS resolution instability.) The UltraDNS issue

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Optimizing the Front End with Time to Interact (TTI)

Despite claims that slow websites are a major turnoff for site visitors the problem is growing. However, there is a bright spot, as some websites have caught on to an emerging key metric for the usability of a website and the user experience it delivers: Time to Interact (TTI).

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