LINX Establishes Peering Services in the U.S. Using FiberLight Dark Fiber


Company Profile

The London Internet Exchange (LINX) is one of the largest Internet exchanges in the world, connecting over 800 member ASNs from over 75 countries around the globe. LINX continues to expand their London presence with over 10 PoPs across the capital along with regional exchanges in Wales, Manchester and Scotland. LINX also operates an Internet exchange in the Ashburn metro area in the US just outside Washington DC.


The London Internet Exchange is based out of Europe, and, following discussions with U.S. networks, established its first U.S. exchange location in Northern Virginia in 2014.

“We needed dark fiber,” Senior Network Engineer Bartek Raszczyk said. “We’re new to Northern Virginia and never operated in the U.S. before.”

The LINX model of a non-profit peering service is not widely seen in the U.S. LINX believes this commercial model brings greater benefits to its members as they are able to return excess profit back to the members in the form of lower prices.

Through years of industry experience, Raszczyk said they developed a list of relevant providers, which included FiberLight, LLC (FiberLight).


During consultations, FiberLight proposed a solution which offered both competitive pricing and exceptional customer experience.

“Usually the sales people just know they’re selling something, but don’t have a lot of detail as to what is right for you,” Raszczyk said.

FiberLight provided a three-node dark fiber ring for LINX peering services in Northern Virginia. The implementation, according to Raszczyk, went smoothly and was issue-free.


For the Northern Virginia dark fiber network, LINX spanned three data centers by 2015: Coresite in Reston, Dupont Fabros Technology (now a Digital Realty facility) in Ashburn, and Evoswitch in Manassas. The data centers are connected so the peering mesh spans all three. FiberLight built dark fiber to and between each, which LINX then lit on its own.

Raszczyk said their locations in London experience more interruption compared with the Northern Virginia network. While this doesn’t disrupt service to members, it is frustrating for LINX staff.

“We haven’t had any issues with the FiberLight network,” Raszczyk said. “It’s stable all of the time.”

What I liked about FiberLight was that the network is monitored constantly. None of the competition seemed to have that.

Bartek Raszczyk, Senior Network Engineer, LINX


Total On-Net Data Centers


Mid-Atlantic On-Net Data Centers


Average Core Availability


Total Route Miles


Mid-Atlantic Route Miles

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