Tag Archives: ISP

A powershell script for running reverse lookups on many IP addresses at once

I often find myself looking at web logs when researching anomalous traffic on our servers.  It’s not uncommon for a poorly written web scraper to come through the system and generate spurious errors, and I start looking at what IP … Continue reading

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Map of the world’s submarine data cables highlight challenges of routing internet traffic

I came across a very interesting site today – http://www.cablemap.info.  It’s an overlay of the world’s submarine data transmission cables on top of google maps, allowing you to see how the world interconnects.  It appears to be the work of … Continue reading

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How Akamai routes traffic (hint: it’s not always dynamic)

I thought I had a full grasp of how Akamai routing works, but a recent dive into our web logs has taught me that world of high speed internet traffic routing is more nuanced. One of the big selling points … Continue reading

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Troubleshooting Akamai: How to geolocate an IP Address

Akamai provides enormous value by accelerating content delivery around the world. However, as I described a few months back, Akamai relies on the DNS server that processes the request to determine where to accelerate traffic. Large, global corporations often have complex … Continue reading

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I’m not convinced that Verizon’s “Live Chat” is really live

After a very negative run-in with Comcast’s repair service (they cancelled my appointment after I didn’t answer a phone call listed as “Private Caller” that they didn’t tell me to expect to a different phone number than the one I … Continue reading

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Comcast / Level 3 network peering dispute exposes failures in a private market internet

Comcast is threatening to cut off Netflix streaming unless an Internet backbone provider, Level 3, agrees to pay it money.  Comcast is quickly turning into the poster boy for Network Neutrality, and in the process, it is highlighting the inefficiencies … Continue reading

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